{"title":"Carbon Bike Rim","description":"\u003cp\u003eToray T700  and T800 with stable resign,complete hand made product,100% quality check by auto machine for the stable quality.More models and weave option etc for your OEM projects\u003c\/p\u003e","products":[{"product_id":"60mm-tubular-carbon-rim-700c-25mm-wide-rim-brake-bola","title":"60mm Tubular Carbon Rim, 700C, 25mm Wide, Rim Brake | Bola","description":"\u003ch2\u003e60mm Tubular Carbon Rim for Rim Brake Road Bikes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDirect answer:\u003c\/strong\u003e The Bola 60mm tubular carbon rim is engineered for competitive cyclists demanding lightweight, aerodynamic, and reliable performance on rim brake road bikes. Featuring a 25mm outer width, U-shape profile, and a verified 460g (±15g) per rim, it delivers optimal stiffness and handling for racing and endurance applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Depth\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (per rim)\u003c\/td\u003e\n\u003ctd\u003e460g ±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire System\u003c\/td\u003e\n\u003ctd\u003eTubular only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake Compatibility\u003c\/td\u003e\n\u003ctd\u003eRim brake\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e520mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e100–125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEngineering and Testing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStructural testing: Forward compressive strength \u0026gt;300kg\u003c\/li\u003e\n\u003cli\u003eLateral torsion resistance: \u0026gt;50kg\u003c\/li\u003e\n\u003cli\u003eSpoke hole tension: \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003eTolerance: \u0026lt;0.3mm roundness, \u0026lt;0.15mm flatness, \u0026lt;3g dynamic balance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMaterial: Pre-preg carbon fiber construction is verified to industry standards. Ideal for UCI-compliant race builds when verified locally.\u003c\/p\u003e\n\n\u003ch3\u003ePerformance Use Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoad racing:\u003c\/strong\u003e Optimized for competitive events favoring aerodynamic, light, and stiff rim profiles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom wheel builders:\u003c\/strong\u003e Suitable for lightweight and aerodynamic rim brake builds in 700C standard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-pressure riding:\u003c\/strong\u003e Tubular tire compatibility with pressure range up to 125 psi supports aggressive race setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Are 25mm wide carbon rims better than 23mm for aerodynamics?\u003c\/strong\u003e\u003cbr\u003eA: 25mm width supports wider tubular tires for improved aerodynamic pairing with 23–28mm tires; commonly results in smoother airflow and greater stability at speed per multiple wind tunnel tests.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the actual weight per rim and why does it matter?\u003c\/strong\u003e\u003cbr\u003eA: Verified at 460g ±15g per rim. Lower weight reduces rotational mass for improved acceleration and climbing during races.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is this rim still worth it over a clincher for racing?\u003c\/strong\u003e\u003cbr\u003eA: Tubular rims remain popular among professional teams for low system weight and improved ride feel in certain race conditions, but require dedicated gluing and tire management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"60mm Tubular Carbon Rim | 700C 25mm Wide Rim Brake | 460g\",\n  \"description\": \"60mm Tubular Carbon Rim for Rim Brake Road Bikes Direct answer: The Bola 60mm tubular carbon rim is engineered for competitive cyclists demanding lightweight, aerodynamic, and reliable performance on rim brake road bikes. Featuring a 25mm outer width, U-shape profile, and a verified 460g (±15g) per rim, it delivers optimal stiffness and handling for racing and endurance applications. Key Specifications Specification Value Rim Depth 60mm Outer Width 25mm Inner Width 18mm Weight (per rim) 460g ±15g Tire System Tubular only Brake Compatibility Rim brake ERD 520mm Max Rider Weight 100kg Tire Pressure Range 100–125 psi Engineering and Testing Structural testing: Forward compressive strength \u0026gt;300kg Lateral torsion resistance: \u0026gt;50kg Spoke hole tension: \u0026gt;280kg Tolerance: \u0026lt;0.3mm roundness, \u0026lt;0.15mm flatness, \u0026lt;3g dynamic balance Material: Pre-preg carbon fiber construction is verified to industry standards. Ideal for UCI-compliant race builds when verified locally. Performance Use Cases Road racing: Optimized for competitive events favoring aerodynamic, light, and stiff rim profiles. Custom wheel builders: Suitable for lightweight and aerodynamic rim brake builds in 700C standard. High-pressure riding: Tubular tire compatibility with pressure range up to 125 psi supports aggressive race setups. FAQs Q: Are 25mm wide carbon rims better than 23mm for aerodynamics? A: 25mm width supports wider tubular tires for improved aerodynamic pairing with 23–28mm tires; commonly results in smoother airflow and greater stability at speed per multiple wind tunnel tests. Q: What is the actual weight per rim and why does it matter? A: Verified at 460g ±15g per rim. Lower weight reduces rotational mass for improved acceleration and climbing during races. Q: Is this rim still worth it over a clincher for racing? 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Available in hooked (21mm inner width) and hookless (23mm inner width) configurations, it supports tire widths from 25c to 32c and a maximum tire pressure of 125 psi (hooked) in line with ETRTO 2023 tubeless standards.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Size\u003c\/td\u003e\n\u003ctd\u003e700c\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eU-shape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Depth\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e21mm (hooked) \/ 23mm (hookless)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e540mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Angle (Front\/Rear)\u003c\/td\u003e\n\u003ctd\u003e7° \/ 5°–7° (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin \/ Max Tire Pressure\u003c\/td\u003e\n\u003ctd\u003e100 \/ 125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e120 kg (264 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWeight Options\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003cth\u003eWeight per Rim\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e470 ± 15 g\u003c\/td\u003e\n\u003ctd\u003eTraining, durability-focused builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuper Light\u003c\/td\u003e\n\u003ctd\u003e430 ± 15 g\u003c\/td\u003e\n\u003ctd\u003eAll-round racing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltra Light\u003c\/td\u003e\n\u003ctd\u003e390 ± 10 g\u003c\/td\u003e\n\u003ctd\u003eClimbing and lightweight builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtreme Light\u003c\/td\u003e\n\u003ctd\u003e370 ± 10 g\u003c\/td\u003e\n\u003ctd\u003eWeight-optimized race builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eNote: Lighter grades use a reduced layup schedule. While the Extreme Light option (370 ± 10 g) offers the lowest rotating mass, the Standard grade (470 ± 15 g) provides greater impact resistance for rougher road surfaces or heavier riders approaching the 120 kg limit.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eStructural Performance Data\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion Resistance:\u003c\/strong\u003e \u0026gt;50 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension Rating:\u003c\/strong\u003e \u0026gt;280 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium (balance):\u003c\/strong\u003e \u0026lt;3 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlatness Tolerance:\u003c\/strong\u003e \u0026lt;0.15 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoundness Tolerance:\u003c\/strong\u003e \u0026lt;0.3 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHooked vs. Hookless: Which Should You Choose?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHooked (21mm inner width):\u003c\/strong\u003e Compatible with all clincher and tubeless road tires. Recommended for riders using tires rated below ETRTO hookless certification, or for mixed-surface use where higher pressures may be needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHookless (23mm inner width):\u003c\/strong\u003e Provides a larger air volume, improved ride compliance, and aerodynamic tire-rim integration at lower pressures (recommended 72–87 psi with compatible tires). Requires ETRTO-approved hookless-compatible tires only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility \u0026amp; Build Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTubeless-ready straight from the factory — no conversion tape required on the rim bed\u003c\/li\u003e\n\u003cli\u003eCompatible with standard road hubs (100mm front \/ 130mm or 142mm rear)\u003c\/li\u003e\n\u003cli\u003eSupports both center-lock and 6-bolt disc configurations when spec'd at build\u003c\/li\u003e\n\u003cli\u003eCustom spoke, valve, and assembly hole diameters available on request\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a 28mm wide rim better than 25mm for aerodynamics?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, for tires 28c and wider. The 28mm outer width creates a continuous aero profile with 28–32c tires, reducing the 'light bulb' effect. For 25c tires, the aerodynamic benefit is marginal but the larger air volume still reduces rolling resistance.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow light should a carbon road rim be for climbing?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFor dedicated climbing builds, rims under 400 g per rim are considered competitive. The Ultra Light (390 g) and Extreme Light (370 g) grades fall within this range. Riders prioritizing durability over pure weight should select the Standard (470 g) or Super Light (430 g) grade.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre hookless rims safe for road cycling?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, when used with ETRTO-certified hookless-compatible tires at the manufacturer's recommended pressure (typically 72–87 psi for road). The hookless bead design is used by major OEM wheel manufacturers and is validated under ETRTO 2023 tubeless road standards.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat tire sizes are compatible with this rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe 21mm hooked inner width is optimized for 25c–32c tires. The 23mm hookless inner width is best matched to 28c–35c tires for an aerodynamically flush profile.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes this rim come with a warranty?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. A three-year manufacturer's warranty covers structural defects under normal riding conditions. Warranty excludes crash damage and use outside the stated rider weight or pressure limits.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c tubeless carbon road rim 50mm high 28mm outer wide 21mm hooked inner wide or 23mm hookless inner width,super ultra or extreme light option Bola\",\n  \"description\": \"Bola 700c Carbon Tubeless Road Rim — 50mm Deep, 28mm Wide The Bola 50mm carbon tubeless road rim delivers a measurable aerodynamic and compliance advantage for road racing, gran fondo, and endurance riding. Available in hooked (21mm inner width) and hookless (23mm inner width) configurations, it supports tire widths from 25c to 32c and a maximum tire pressure of 125 psi (hooked) in line with ETRTO 2023 tubeless standards. Key Specifications Parameter Value Wheel Size 700c Rim Profile U-shape Rim Depth 50mm Outer Width 28mm Inner Width 21mm (hooked) \/ 23mm (hookless) ERD 540mm Valve Hole Diameter 6.5mm (customizable) Spoke Hole Diameter 4.5mm (customizable) Assembly Hole Diameter 7.5mm (customizable) Nipple Angle (Front\/Rear) 7° \/ 5°–7° (customizable) Min \/ Max Tire Pressure 100 \/ 125 psi Max Rider Weight 120 kg (264 lb) Weight Options Grade Weight per Rim Best For Standard 470 ± 15 g Training, durability-focused builds Super Light 430 ± 15 g All-round racing Ultra Light 390 ± 10 g Climbing and lightweight builds Extreme Light 370 ± 10 g Weight-optimized race builds Note: Lighter grades use a reduced layup schedule. While the Extreme Light option (370 ± 10 g) offers the lowest rotating mass, the Standard grade (470 ± 15 g) provides greater impact resistance for rougher road surfaces or heavier riders approaching the 120 kg limit. Structural Performance Data Forward Compressive Strength: \u0026gt;300 kg Lateral Torsion Resistance: \u0026gt;50 kg Spoke Hole Tension Rating: \u0026gt;280 kg Dynamic Equilibrium (balance): \u0026lt;3 g Flatness Tolerance: \u0026lt;0.15 mm Roundness Tolerance: \u0026lt;0.3 mm Hooked vs. Hookless: Which Should You Choose? Hooked (21mm inner width): Compatible with all clincher and tubeless road tires. Recommended for riders using tires rated below ETRTO hookless certification, or for mixed-surface use where higher pressures may be needed. Hookless (23mm inner width): Provides a larger air volume, improved ride compliance, and aerodynamic tire-rim integration at lower pressures (recommended 72–87 psi with compatible tires). Requires ETRTO-approved hookless-compatible tires only. Compatibility \u0026 Build Notes Tubeless-ready straight from the factory — no conversion tape required on the rim bed Compatible with standard road hubs (100mm front \/ 130mm or 142mm rear) Supports both center-lock and 6-bolt disc configurations when spec'd at build Custom spoke, valve, and assembly hole diameters available on request Frequently Asked Questions Is a 28mm wide rim better than 25mm for aerodynamics? Yes, for tires 28c and wider. The 28mm outer width creates a continuous aero profile with 28–32c tires, reducing the 'light bulb' effect. For 25c tires, the aerodynamic benefit is marginal but the larger air volume still reduces rolling resistance. How light should a carbon road rim be for climbing? For dedicated climbing builds, rims under 400 g per rim are considered competitive. The Ultra Light (390 g) and Extreme Light (370 g) grades fall within this range. Riders prioritizing durability over pure weight should select the Standard (470 g) or Super Light (430 g) grade. Are hookless rims safe for road cycling? Yes, when used with ETRTO-certified hookless-compatible tires at the manufacturer's recommended pressure (typically 72–87 psi for road). The hookless bead design is used by major OEM wheel manufacturers and is validated under ETRTO 2023 tubeless road standards. What tire sizes are compatible with this rim? The 21mm hooked inner width is optimized for 25c–32c tires. The 23mm hookless inner width is best matched to 28c–35c tires for an aerodynamically flush profile. Does this rim come with a warranty? Yes. A three-year manufacturer's warranty covers structural defects under normal riding conditions. 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Choose between hookless or hooked bead variants, 21mm or 23mm inner widths, and weights from 375g to 460g to optimize your performance and tire compatibility.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 700c (ISO 622)\u003c\/li\u003e\n\u003cli\u003eDepth: 45mm (U-shape asymmetric offset)\u003c\/li\u003e\n\u003cli\u003eWidth: 28mm outer \/ 21mm or 23mm inner\u003c\/li\u003e\n\u003cli\u003eWeight Options: Extreme-Light 375g, Ultra-Light 380g, Super-Light 405g, Standard 460g (± tolerances)\u003c\/li\u003e\n\u003cli\u003eBead Type: Hooked or Hookless (ETRTO compatible)\u003c\/li\u003e\n\u003cli\u003eSpoke Hole: 4.5mm diameter, for disc\/rim brake hubs\u003c\/li\u003e\n\u003cli\u003eMax Rider Weight: 100kg\u003c\/li\u003e\n\u003cli\u003eRecommended Tire Size: 25–32mm tubeless-ready (100–125 psi)\u003c\/li\u003e\n\u003cli\u003eMaterial: T700\/T800 unidirectional carbon fiber, epoxy matrix\u003c\/li\u003e\n\u003cli\u003eDynamic Balance: \u0026lt;3g deviation\u003c\/li\u003e\n\u003cli\u003eFlatness Tolerance: \u0026lt;0.15mm; Roundness: \u0026lt;0.3mm\u003c\/li\u003e\n\u003cli\u003eWarranty: 3 years\u003c\/li\u003e\n\u003cli\u003eCertifications: ISO 622, ETRTO bead compatibility, dynamic balance and flatness tested\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComparison Table\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eBola 45TR28\u003c\/th\u003e\n\u003cth\u003eTypical Competitor\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfile\u003c\/td\u003e\n\u003ctd\u003eAsymmetric, U-shape\u003c\/td\u003e\n\u003ctd\u003eSymmetric or wave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e21\/23mm\u003c\/td\u003e\n\u003ctd\u003e23-25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e375–460g\u003c\/td\u003e\n\u003ctd\u003e330–460g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBead Type\u003c\/td\u003e\n\u003ctd\u003eHooked \/ Hookless\u003c\/td\u003e\n\u003ctd\u003eVaries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePuncture Risk\u003c\/td\u003e\n\u003ctd\u003eLow (tubeless ready)\u003c\/td\u003e\n\u003ctd\u003eLow (tubeless ready)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100kg\u003c\/td\u003e\n\u003ctd\u003e90–105kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eISO 622 \/ ETRTO\u003c\/td\u003e\n\u003ctd\u003eStated or unspecified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What are the main advantages of an asymmetric rim design?\u003c\/strong\u003e\u003cbr\u003eA: Asymmetric rims balance spoke tension for increased wheel durability and reduce lateral flex in disc brake setups, compared to symmetric designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: When should I use hookless vs. hooked bead?\u003c\/strong\u003e\u003cbr\u003eA: Hookless beads support lower tire pressures and reduced weight; hooked beads allow a wider tire pressure and standard clinchers. Always verify tire compatibility for hookless use above 70psi.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is the Bola 45TR28 suitable for long distance or racing?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Its low weight and aerodynamic profile make it ideal for endurance, race, and high-performance urban builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How does it compare for safety at sub-400g weights?\u003c\/strong\u003e\u003cbr\u003eA: All rim weights meet ISO 622 and dynamic balance testing. Extreme-Light (375g) is best for riders ≤85kg and smooth surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What tire sizes and pressures are supported?\u003c\/strong\u003e\u003cbr\u003eA: Designed for 25–32mm tubeless tires, up to 125psi (hooked) or 100psi (hookless as per ETRTO guidelines).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Bola 700c 45mm Asymmetric Carbon Tubeless Road Rim – 28mm Wide, Hook or Hookless, 375–460g\",\n  \"description\": \"Bola 700c 45mm Asymmetric Carbon Tubeless Rim Direct answer: The Bola 700c 45mm asymmetric carbon tubeless rim is designed for competitive road cycling and endurance rides, offering advanced aerodynamics and weight options for custom wheel builds. Choose between hookless or hooked bead variants, 21mm or 23mm inner widths, and weights from 375g to 460g to optimize your performance and tire compatibility. Key Features Size: 700c (ISO 622) Depth: 45mm (U-shape asymmetric offset) Width: 28mm outer \/ 21mm or 23mm inner Weight Options: Extreme-Light 375g, Ultra-Light 380g, Super-Light 405g, Standard 460g (± tolerances) Bead Type: Hooked or Hookless (ETRTO compatible) Spoke Hole: 4.5mm diameter, for disc\/rim brake hubs Max Rider Weight: 100kg Recommended Tire Size: 25–32mm tubeless-ready (100–125 psi) Material: T700\/T800 unidirectional carbon fiber, epoxy matrix Dynamic Balance: Flatness Tolerance: Warranty: 3 years Certifications: ISO 622, ETRTO bead compatibility, dynamic balance and flatness tested Comparison Table Parameter Bola 45TR28 Typical Competitor Profile Asymmetric, U-shape Symmetric or wave Inner Width 21\/23mm 23-25mm Weight 375–460g 330–460g Bead Type Hooked \/ Hookless Varies Puncture Risk Low (tubeless ready) Low (tubeless ready) Max Rider Weight 100kg 90–105kg Certifications ISO 622 \/ ETRTO Stated or unspecified FAQs Q: What are the main advantages of an asymmetric rim design? A: Asymmetric rims balance spoke tension for increased wheel durability and reduce lateral flex in disc brake setups, compared to symmetric designs. Q: When should I use hookless vs. hooked bead? A: Hookless beads support lower tire pressures and reduced weight; hooked beads allow a wider tire pressure and standard clinchers. Always verify tire compatibility for hookless use above 70psi. Q: Is the Bola 45TR28 suitable for long distance or racing? A: Yes. Its low weight and aerodynamic profile make it ideal for endurance, race, and high-performance urban builds. Q: How does it compare for safety at sub-400g weights? A: All rim weights meet ISO 622 and dynamic balance testing. Extreme-Light (375g) is best for riders ≤85kg and smooth surfaces. Q: What tire sizes and pressures are supported? 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Key Specifications Rim Size: 700c Profile Depth: 50mm External Width: 28mm; Internal Options: 21mm \/ 23mm Weight Tiers: 370g–470g (± tolerance per tier; see table) Rim Type: Tubeless-ready clincher Compatibility: Hooked \u0026amp; hookless tubeless systems Maximum Rider Weight: 120 kg Warranty: 3 years manufacturer Custom Drilling: Available on request Weight Tiers Comparison Tier Weight (per rim) Best Use Standard 470 ±15g Training, endurance, heavy loads Super Light 430 ±15g All-round road racing Ultralight 390 ±10g Climbing, lightweight builds Extreme Light 370 ±10g Weight-focused race setups (tighter tolerance band, lower long-term durability) Trade-offs \u0026amp; Standards Durability: Lower weight tiers use advanced layup techniques; Extreme Light prioritizes weight over long-term training durability. Testing: Manufactured to ISO 4210 cycling safety standards; validated to \u003e120kg load rating. 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for competitive cyclists, this 700C tubular carbon rim weighs just 295g in its superlight variant, offering a 35mm deep U-profile and a 28mm outer width for a measured balance of aerodynamic efficiency and lateral stability.\u003c\/strong\u003e \u003cbr\u003e \u003cbr\u003e \u003cem\u003eAvailable in both Standard (320 ± 15g) and Superlight (295 ± 10g) models, this rim is optimized for climbing, sustained speed on flat roads, and versatile use across mixed terrain. Constructed from Toray T700\/T800-grade carbon fiber and epoxy resin, it is tested to more than 300kg forward compressive strength and supports a maximum rider weight of 100kg (ISO in-house strength test results available).\u003c\/em\u003e\u003c\/p\u003e \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eRim Size:\u003c\/strong\u003e 700C (ETRTO 622mm)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e 35mm deep U-shape (tubular)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOuter Width:\u003c\/strong\u003e 28mm\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 295g ± 10g (Superlight) \/ 320g ± 15g (Standard)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Toray T700\/T800 carbon fiber composite, epoxy matrix\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTire Compatibility:\u003c\/strong\u003e 23–28mm tubular tires\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpoke Drilling:\u003c\/strong\u003e Custom options available; supports standard 4.5mm spokes\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStrength:\u003c\/strong\u003e \u0026gt;300kg forward compressive, \u0026gt;50kg lateral torsion (tested in-house)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMax Rider Weight:\u003c\/strong\u003e 100kg\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3 years (structural defects, normal riding conditions)\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eWhy Choose a 35mm Tubular Carbon Rim?\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e35mm depth provides aerodynamic gains on flat sections yet remains climb-friendly under 300g (typical consensus among competitive racers).\u003c\/li\u003e \u003cli\u003eU-Shape and 28mm width stabilize airflow, improving control in crosswinds and increasing tire support for modern race tires.\u003c\/li\u003e \u003cli\u003eTubular format minimizes rim weight and rotational mass, benefiting acceleration and handling—tradeoff: requires gluing and is not compatible with clincher\/tubeless tires.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eComparison Table\u003c\/h2\u003e \u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eDepth\u003c\/th\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003cth\u003eWeight (g)\u003c\/th\u003e\n\u003cth\u003eTire\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThis Product\u003c\/td\u003e\n\u003ctd\u003e35mm\u003c\/td\u003e\n\u003ctd\u003e28mm\u003c\/td\u003e\n\u003ctd\u003e295–320\u003c\/td\u003e\n\u003ctd\u003eTubular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDT45S Tubular\u003c\/td\u003e\n\u003ctd\u003e45mm\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e330–400\u003c\/td\u003e\n\u003ctd\u003eTubular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0 Carbon Tubular\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e~390\u003c\/td\u003e\n\u003ctd\u003eTubular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e700C Disc Tubular\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e330\u003c\/td\u003e\n\u003ctd\u003eTubular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e \u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eWhat are the advantages of a 35mm carbon tubular rim for racing?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003e35mm offers a versatile depth for both climbing and flat courses, with reduced rotational weight for responsive handling.\u003c\/p\u003e\u003c\/details\u003e \u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eIs this rim suitable for everyday training as well as racing?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eDesigned for racing, it can be used for training by lighter riders; 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Built from tested Toray T700 \/ T800 composite, it meets advanced structural performance benchmarks (Forward Compressive Strength \u0026gt;300kg; Lateral Torsion \u0026gt;50kg; Dynamic Balance \u0026lt;3g; Flatness \u0026lt;0.15mm; Roundness \u0026lt;0.3mm) for professional and brand-level use.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Diameter\u003c\/td\u003e\n\u003ctd\u003e700c (ISO 622)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape (Asymmetric offset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Depth\u003c\/td\u003e\n\u003ctd\u003e38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e18mm or 20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEffective Rim Diameter (ERD)\u003c\/td\u003e\n\u003ctd\u003e578mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Superlight)\u003c\/td\u003e\n\u003ctd\u003e385 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Normal)\u003c\/td\u003e\n\u003ctd\u003e425 ± 15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTyre Compatibility\u003c\/td\u003e\n\u003ctd\u003eHooked or hookless clincher, tubed or tubeless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Tyre Pressure (hooked)\u003c\/td\u003e\n\u003ctd\u003e125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eToray T700 \/ T800 carbon composite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 years (structural defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cbr\u003e\u003ch3\u003eSituational Suitability\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndurance\/road racing:\u003c\/strong\u003e Aerodynamic 38mm profile tested for crosswind control and high-speed handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide tyre builds:\u003c\/strong\u003e 25mm external width supports 25–32mm tyres for enhanced grip and comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/pro team OEM:\u003c\/strong\u003e Custom drilling and weight options for tailored use-case optimization.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComparative Table — 38mm Carbon Clincher Rims\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eInternal Width\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eOffset\u003c\/th\u003e\n\u003cth\u003eTubeless?\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThis Product\u003c\/td\u003e\n\u003ctd\u003e18\/20mm\u003c\/td\u003e\n\u003ctd\u003e385–425g\u003c\/td\u003e\n\u003ctd\u003eAsymmetric\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD21-38\u003c\/td\u003e\n\u003ctd\u003e21mm\u003c\/td\u003e\n\u003ctd\u003e380–410g\u003c\/td\u003e\n\u003ctd\u003eSymmetric\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR18-38\u003c\/td\u003e\n\u003ctd\u003e18mm\u003c\/td\u003e\n\u003ctd\u003e470g\u003c\/td\u003e\n\u003ctd\u003eSymmetric\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What are the advantages of an asymmetric 700c carbon rim?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Improves spoke tension balance for increased durability and reliability, especially for rear wheel builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How does hookless vs. hooked compatibility affect tire setup?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Hookless is preferred for tubeless with lower pressures; hooked supports higher pressures and standard clinchers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is this rim suitable for endurance or racing wheel builds?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, optimally tested for both applications. 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Carbon Clincher Rim – 50mm Aero Profile, 25mm Wide\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSummary:\u003c\/strong\u003e Precision-engineered 700C full carbon clincher rim with 50mm aerodynamic profile, 25mm outer width, and 18mm inner width. Weighs 460g (standard) or 420g (superlight); supports up to 100kg rider weight. Designed for road cyclists and brands seeking lightweight, U-shaped rims for speed and controlled handling.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRim Size\u003c\/td\u003e\n\u003ctd\u003e700C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-Shape\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProfile Depth\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e18 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight (Std\/Superlight)\u003c\/td\u003e\n\u003ctd\u003e460 ±15g \/ 420 ±10g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e539 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eValve Hole\u003c\/td\u003e\n\u003ctd\u003e6.5 mm (Presta)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRider Weight Limit\u003c\/td\u003e\n\u003ctd\u003e100 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMax Tire Pressure\u003c\/td\u003e\n\u003ctd\u003e125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCertified Performance \u0026amp; Tolerances\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eForward compressive strength: \u0026gt;300 kg (ISO Lab tested)\u003c\/li\u003e\n\u003cli\u003eLateral torsion: \u0026gt;50 kg\u003c\/li\u003e\n\u003cli\u003eSpoke hole tension: \u0026gt;280 kg\u003c\/li\u003e\n\u003cli\u003eDynamic equilibrium: \u0026lt;3g\u003c\/li\u003e\n\u003cli\u003eFlatness: \u0026lt;0.15mm, Roundness: \u0026lt;0.3mm tolerance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 25–32mm clincher road tires (ETRTO standard)\u003c\/li\u003e\n  \u003cli\u003eNot compatible with tubeless tires\u003c\/li\u003e\n  \u003cli\u003e6.5mm Presta valve stem hole\u003c\/li\u003e\n  \u003cli\u003e700C road bike frames\u003c\/li\u003e\n  \u003cli\u003eWeight-optimized for competitive road cycling and team builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse Cases \u0026amp; Tradeoffs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOptimized for aerodynamic efficiency and stable handling in crosswinds\u003c\/li\u003e\n  \u003cli\u003e25mm outer width improves tire support over narrower 23mm rims; compatible with modern wide tire setups\u003c\/li\u003e\n  \u003cli\u003eWhile not tubeless-ready, clincher design streamlines installation and fits common racing tires\u003c\/li\u003e\n  \u003cli\u003eSuperlight option (420g) offers lower weight, but reduces maximum load vs. standard (460g) build\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComparison: 18mm vs. 19mm Inner Width\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003e18mm (This Rim)\u003c\/th\u003e\n\u003cth\u003e19mm\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Width\u003c\/td\u003e\n\u003ctd\u003e18mm\u003c\/td\u003e\n\u003ctd\u003e19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Options\u003c\/td\u003e\n\u003ctd\u003e25–32mm\u003c\/td\u003e\n\u003ctd\u003e28–35mm+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAero Fit (28mm Tire)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eMaximized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRolling Resistance\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003ctd\u003eLowest\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eLower\u003c\/td\u003e\n\u003ctd\u003eSlightly Higher\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: Can I use this 50mm rim with tubeless tires?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA: This model is clincher only, not tubeless-ready. Use with clincher tires and tubes.\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: What tires work best on a 25mm outer width rim?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA: 25–28mm clincher road tires (ETRTO standard) provide an optimal aero and handling balance.\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: What’s the rider weight limit?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA: Maximum rider weight is 100kg as tested for compressive strength.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eWarranty: 3 years (manufacturing defects only; does not cover crash\/overload above weight limit). Manufactured with ISO-compliant testing in China. Trusted by small and medium cycling brands across Europe\/North America.\u003c\/em\u003e\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700C Carbon Clincher Rim 50mm Profile – 25mm Outer \/ 18mm Inner Width, U-Shape, 460g\",\n  \"description\": \"700C Carbon Clincher Rim – 50mm Aero Profile, 25mm Wide Summary: Precision-engineered 700C full carbon clincher rim with 50mm aerodynamic profile, 25mm outer width, and 18mm inner width. Weighs 460g (standard) or 420g (superlight); supports up to 100kg rider weight. Designed for road cyclists and brands seeking lightweight, U-shaped rims for speed and controlled handling. Key Specifications Parameter Value Rim Size 700C Rim Shape U-Shape Profile Depth 50 mm Outer Width 25 mm Inner Width 18 mm Weight (Std\/Superlight) 460 ±15g \/ 420 ±10g ERD 539 mm Valve Hole 6.5 mm (Presta) Rider Weight Limit 100 kg Max Tire Pressure 125 psi Certified Performance \u0026 Tolerances Forward compressive strength: \u0026gt;300 kg (ISO Lab tested) Lateral torsion: \u0026gt;50 kg Spoke hole tension: \u0026gt;280 kg Dynamic equilibrium: \u0026lt;3g Flatness: \u0026lt;0.15mm, Roundness: \u0026lt;0.3mm tolerance Compatibility Fits 25–32mm clincher road tires (ETRTO standard) Not compatible with tubeless tires 6.5mm Presta valve stem hole 700C road bike frames Weight-optimized for competitive road cycling and team builds Use Cases \u0026 Tradeoffs Optimized for aerodynamic efficiency and stable handling in crosswinds 25mm outer width improves tire support over narrower 23mm rims; compatible with modern wide tire setups While not tubeless-ready, clincher design streamlines installation and fits common racing tires Superlight option (420g) offers lower weight, but reduces maximum load vs. standard (460g) build Comparison: 18mm vs. 19mm Inner Width Feature 18mm (This Rim) 19mm Internal Width 18mm 19mm Tire Options 25–32mm 28–35mm+ Aero Fit (28mm Tire) Good Maximized Rolling Resistance Low Lowest Weight Lower Slightly Higher FAQ Q: Can I use this 50mm rim with tubeless tires? 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competitive road cyclists and brands seeking OEM or ODM customization. Engineered for performance, it offers a balance of low weight (as per industry standard), stiffness, and dependable durability tested under ISO4210-7:2014 protocols.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 700C (622mm bead seat diameter)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Type:\u003c\/strong\u003e Tubular (glued tire compatibility)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e U-shape for reduced aerodynamic drag and variable wind stability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-modulus carbon fiber, multi-layered for impact resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomizable:\u003c\/strong\u003e OEM\/ODM services, color, logos, branding, rim depth options\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke:\u003c\/strong\u003e CNC Customs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulk Availability:\u003c\/strong\u003e 5 pairs per shipment, 15-day lead time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison Table: Carbon vs. Aluminum 700C Tubular Rims\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eCarbon Tubular Rim\u003c\/th\u003e\n\u003cth\u003eAluminum Tubular Rim\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eLow (industry avg. 350-500g)\u003c\/td\u003e\n\u003ctd\u003eModerate (500-650g avg.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAerodynamics\u003c\/td\u003e\n\u003ctd\u003eShaped, reduced drag\u003c\/td\u003e\n\u003ctd\u003eLess optimized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCustom Branding\u003c\/td\u003e\n\u003ctd\u003eAvailable (OEM\/ODM)\u003c\/td\u003e\n\u003ctd\u003eRare\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRide Quality\u003c\/td\u003e\n\u003ctd\u003eStiff, responsive\u003c\/td\u003e\n\u003ctd\u003eDampened, less harsh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDurability\u003c\/td\u003e\n\u003ctd\u003eImpact tested (ISO4210-7)\u003c\/td\u003e\n\u003ctd\u003eLong-term, less impact resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eUse Case Alignment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoad Racing:\u003c\/strong\u003e Optimized for lightweight and aerodynamics, ideal for criteriums and time trials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTeam \u0026amp; Brand Supply:\u003c\/strong\u003e OEM\/ODM customization increases value for small cycling brands and pro teams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulk B2B Orders:\u003c\/strong\u003e 5-pair shipment and branding flexibility suit distributors and resellers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat makes a 700C carbon fiber tubular rim suitable for high-performance road cycling?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThis rim’s U-shape aerodynamic profile and high-modulus carbon layup reduce rotational mass, improve stiffness, and deliver precise handling under race conditions, validated by ISO 4210-7:2014 fatigue and impact test compliance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow does carbon compare to aluminum for tubular bike rims?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eCarbon rims provide significant weight savings, better aerodynamic profiles, and increased stiffness, while aluminum offers greater affordability and dent resistance, but at higher weight and less aerodynamic efficiency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eAre carbon tubular rims recommended for amateur cyclists?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eFor dedicated amateurs seeking improved acceleration and speed, carbon tubular rims offer a performance upgrade but may require careful handling, tire gluing, and are costlier to replace after severe impact.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat should I look for when choosing OEM carbon bike rims in bulk?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eConsider factory experience, adherence to industry testing standards, OEM\/ODM customization options, minimum order quantity, and lead time. This item offers 10+ years' expertise, ISO-certified QC, and 25-pair order flexibility.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat's proposal for the private model development?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eMold cost is half price. Designs can be done by either side. Various weights and  UD,Twitt,Marble etc weaveand carbon T700,T800 and T1000 grades are available, with a 3-year warranty.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700C Carbon Fiber Tubular Bike Rim – U-Shape, OEM\/ODM Available\",\n  \"description\": \"This 700C carbon fiber tubular rim features a U-shape aerodynamic profile, high-modulus carbon layup, and precision construction to meet the needs of competitive road cyclists and brands seeking OEM or ODM customization. Engineered for performance, it offers a balance of low weight (as per industry standard), stiffness, and dependable durability tested under ISO4210-7:2014 protocols. Key Features Size: 700C (622mm bead seat diameter) Rim Type: Tubular (glued tire compatibility) Profile: U-shape for reduced aerodynamic drag and variable wind stability Material: High-modulus carbon fiber, multi-layered for impact resistance Customizable: OEM\/ODM services, color, logos, branding, rim depth options Hub Bearings: 2 front, 5 rear (optimized for smooth rotation, based on premium road standards) Bulk Availability: 25 pairs per shipment, 15-day lead time Comparison Table: Carbon vs. Aluminum 700C Tubular Rims Feature Carbon Tubular Rim Aluminum Tubular Rim Weight Low (industry avg. 350-500g) Moderate (500-650g avg.) Aerodynamics Shaped, reduced drag Less optimized Custom Branding Available (OEM\/ODM) Rare Ride Quality Stiff, responsive Dampened, less harsh Durability Impact tested (ISO4210-7) Long-term, less impact resistant Use Case Alignment Road Racing: Optimized for lightweight and aerodynamics, ideal for criteriums and time trials Team \u0026 Brand Supply: OEM\/ODM customization increases value for small cycling brands and pro teams Bulk B2B Orders: 25-pair shipment and branding flexibility suit distributors and resellers Frequently Asked Questions What makes a 700C carbon fiber tubular rim suitable for high-performance road cycling? This rim’s U-shape aerodynamic profile and high-modulus carbon layup reduce rotational mass, improve stiffness, and deliver precise handling under race conditions, validated by ISO 4210-7:2014 fatigue and impact test compliance. How does carbon compare to aluminum for tubular bike rims? Carbon rims provide significant weight savings, better aerodynamic profiles, and increased stiffness, while aluminum offers greater affordability and dent resistance, but at higher weight and less aerodynamic efficiency. Are carbon tubular rims recommended for amateur cyclists? For dedicated amateurs seeking improved acceleration and speed, carbon tubular rims offer a performance upgrade but may require careful handling, tire gluing, and are costlier to replace after severe impact. What should I look for when choosing OEM carbon bike rims in bulk? Consider factory experience, adherence to industry testing standards, OEM\/ODM customization options, minimum order quantity, and lead time. This item offers 10+ years' expertise, ISO-certified QC, and 25-pair order flexibility. How many hub bearings are standard for smooth performance in carbon wheelsets? Road hubs typically use 2 front bearings and 5 rear, providing optimal rotational precision and load management for competitive cycling. Verify compatibility with your chosen hubs.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Carbon Fiber Bicycle Rim\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/OEMcarbonbikerims_79bc63fa-38b2-4912-9ecb-0f4a82cd43e0.jpg?v=1713769802\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/surface_150c1949-f575-4f39-ae10-c6be0f760aa8.jpg?v=1713769802\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/tubular_1446340d-4918-4c34-81a7-fd08369fff72.png?v=1713769802\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/redbola_c5cbac1c-201c-44af-b5c2-4b69d8bd1aa9.jpg?v=1713769802\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/whitebola_37e3acbb-ec45-48c1-9365-fdc4df799322.jpg?v=1713769803\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/yellowbola_298aa776-1f46-41a9-8a50-916cc07e9309.jpg?v=1713769803\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/QQ_20190429142400_6b3a197b-f427-430b-befd-5bb7ae7d2a81.jpg?v=1713769803\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"price\": \"200.00\",\n    \"priceCurrency\": \"USD\",\n    \"url\": \"https:\/\/bolacarbon.com\/products\/700c-carbon-tubular-bike-rim-oem-odm-u-shape\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"https:\/\/bolacarbon.com\"\n    }\n  }\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What makes a 700C carbon fiber tubular rim suitable for high-performance road cycling?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This rim’s U-shape aerodynamic profile and high-modulus carbon layup reduce rotational mass, improve stiffness, and deliver precise handling under race conditions, validated by ISO 4210-7:2014 fatigue and impact test compliance.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does carbon compare to aluminum for tubular bike rims?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Carbon rims provide significant weight savings, better aerodynamic profiles, and increased stiffness, while aluminum offers greater affordability and dent resistance, but at higher weight and less aerodynamic efficiency.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are carbon tubular rims recommended for amateur cyclists?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For dedicated amateurs seeking improved acceleration and speed, carbon tubular rims offer a performance upgrade but may require careful handling, tire gluing, and are costlier to replace after severe impact.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What should I look for when choosing OEM carbon bike rims in bulk?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Consider factory experience, adherence to industry testing standards, OEM\/ODM customization options, minimum order quantity, and lead time. This item offers 10+ years' expertise, ISO-certified QC, and 25-pair order flexibility.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many hub bearings are standard for smooth performance in carbon wheelsets?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Road hubs typically use 2 front bearings and 5 rear, providing optimal rotational precision and load management for competitive cycling. Verify compatibility with your chosen hubs.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"Default Title","offer_id":45122996142334,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/OEMcarbonbikerims_79bc63fa-38b2-4912-9ecb-0f4a82cd43e0.jpg?v=1780298554"},{"product_id":"700c-carbon-rim-35mm-low-profile-tubeless-365g-25mm-wide-hook-hookless","title":"700C Carbon Rim 35mm Low Profile Tubeless | 365g | 25mm Wide | Hook\/Hookless","description":"\u003ch2\u003e700C Carbon Rim – 35mm Low Profile | 25mm Wide | 365g Superlight\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eLead Answer:\u003c\/strong\u003e This 700C carbon rim features a 35mm low profile, 25mm outer width, and weighs just 365±15g. Compatible with both hook and hookless tubeless tire systems, it is engineered for cross-country, gravel, and road cyclists seeking a balance of aerodynamics, weight savings, and reliability. Meets ETRTO tubeless and ISO 622 standards.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRim Size\u003c\/td\u003e\n\u003ctd\u003e700C (ISO 622)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProfile\u003c\/td\u003e\n\u003ctd\u003eU-shape, 35mm height\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e18mm (20mm available)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight - Superlight\u003c\/td\u003e\n\u003ctd\u003e365±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight - Standard\u003c\/td\u003e\n\u003ctd\u003e400±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eUnidirectional carbon fibre (T700 or equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTubeless Ready\u003c\/td\u003e\n\u003ctd\u003eYes (hook \u0026amp; hookless)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eETRTO, ISO 622\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePerformance \u0026amp; Use Case\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCross-country \u0026amp; Gravel:\u003c\/strong\u003e Low profile (35mm) for stable handling in variable conditions; 365g rim targets sub-1500g wheel builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRoad Cycling:\u003c\/strong\u003e Tubeless compatibility supports wider tire setups and improved rolling efficiency\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustom Builds:\u003c\/strong\u003e Compatible with 700C road and gravel frames and 29-inch hardtail MTBs (ISO 622), plus ETRTO-compliant tires\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison: Lightweight Carbon Rim Options\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eProfile (mm)\u003c\/th\u003e\n\u003cth\u003eWidth (mm)\u003c\/th\u003e\n\u003cth\u003eWeight (g)\u003c\/th\u003e\n\u003cth\u003eTubeless Ready\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eThis Product\u003c\/td\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003ctd\u003e25\/18 (outer\/inner)\u003c\/td\u003e\n\u003ctd\u003e365±15\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompetitor A\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e28\/20\u003c\/td\u003e\n\u003ctd\u003e370\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompetitor B\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e24\/17\u003c\/td\u003e\n\u003ctd\u003e370\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat tire sizes are optimal for an 18mm inner width carbon rim?\u003c\/strong\u003e\u003cbr\u003eMost ETRTO 25-32mm tires are recommended, ideal for road, gravel, and mixed-terrain use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHooked or hookless: which should I choose for tubeless?\u003c\/strong\u003e\u003cbr\u003eHooked rims support higher-pressure clinchers; hookless is preferred for tubeless setups up to 5 bar (per ETRTO guidelines).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoes a 35mm profile provide aerodynamic benefit?\u003c\/strong\u003e\u003cbr\u003e35mm offers a neutral aerodynamic balance for versatile handling in crosswinds and variable terrain; deeper profiles prioritize aero at higher weight.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIs a 25mm wide rim compatible with modern frames?\u003c\/strong\u003e\u003cbr\u003eYes—most disc-brake road and gravel frames (2015+) accept 25mm rims within manufacturer clearance limits.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertification and quality standards?\u003c\/strong\u003e\u003cbr\u003eRim meets ETRTO tubeless and ISO 622 diameter standards. 3-year warranty covers manufacturing defects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700C Carbon Bike Rim 35mm Low Profile | 25mm Wide Tubeless Ready | Hook \u0026 Hookless | 365g Superlight\",\n  \"description\": \"700C Carbon Rim – 35mm Low Profile | 25mm Wide | 365g Superlight Lead Answer: This 700C carbon rim features a 35mm low profile, 25mm outer width, and weighs just 365±15g. Compatible with both hook and hookless tubeless tire systems, it is engineered for cross-country, gravel, and road cyclists seeking a balance of aerodynamics, weight savings, and reliability. Meets ETRTO tubeless and ISO 622 standards. Key Specifications Parameter Value Rim Size 700C (ISO 622) Profile U-shape, 35mm height Outer Width 25mm Inner Width 18mm (20mm available) Weight - Superlight 365±15g Weight - Standard 400±15g Material Unidirectional carbon fibre (T700 or equivalent) Tubeless Ready Yes (hook \u0026 hookless) Certifications ETRTO, ISO 622 Warranty 3 years Performance \u0026 Use Case Cross-country \u0026 Gravel: Low profile (35mm) for stable handling in variable conditions; 365g rim targets sub-1500g wheel builds Road Cycling: Tubeless compatibility supports wider tire setups and improved rolling efficiency Custom Builds: Compatible with 700C road and gravel frames and 29-inch hardtail MTBs (ISO 622), plus ETRTO-compliant tires Comparison: Lightweight Carbon Rim Options Model Profile (mm) Width (mm) Weight (g) Tubeless Ready This Product 35 25\/18 (outer\/inner) 365±15 Yes Competitor A 50 28\/20 370 Yes Competitor B 30 24\/17 370 Yes FAQ What tire sizes are optimal for an 18mm inner width carbon rim? Most ETRTO 25-32mm tires are recommended, ideal for road, gravel, and mixed-terrain use. Hooked or hookless: which should I choose for tubeless? Hooked rims support higher-pressure clinchers; hookless is preferred for tubeless setups up to 5 bar (per ETRTO guidelines). Does a 35mm profile provide aerodynamic benefit? 35mm offers a neutral aerodynamic balance for versatile handling in crosswinds and variable terrain; deeper profiles prioritize aero at higher weight. Is a 25mm wide rim compatible with modern frames? Yes—most disc-brake road and gravel frames (2015+) accept 25mm rims within manufacturer clearance limits. Certification and quality standards? 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Weights verified: 430g (standard), 395g (superlight), 375g (ultralight). Supports modern tubeless and clincher systems. Maximum rider weight: 120kg. Complies with ETRTO 2021 for hookless. Backed by 3-year manufacturer warranty.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRim Size\u003c\/td\u003e\n\u003ctd\u003e700C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eV Shape, 40mm deep\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e24mm or 25mm (select)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eETRTO 2021 (hookless option)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e375–430g (verified tiers)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e558mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eStrength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300kg compressive, \u0026gt;50kg lateral\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;280kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRecommended Tire Width\u003c\/td\u003e\n\u003ctd\u003e25–28mm (24mm inner), 25–32mm (25mm inner)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eUnidirectional carbon fiber with epoxy resin\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eComparison: 24mm vs 25mm Inner Width\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e24mm\u003c\/strong\u003e: Optimized for 25–28mm tires, improved aerodynamics for road racing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e25mm\u003c\/strong\u003e: Supports up to 32mm tires, offering better volume for endurance and rougher road comfort.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse Cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompetitive Road Climbers\u003c\/strong\u003e: Ultralight 375g option minimizes inertia.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEndurance Riders\u003c\/strong\u003e: 25mm width supports wider tires for comfort.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrands and Builders\u003c\/strong\u003e: Multiple weights and width options for custom wheelsets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdl\u003e\n  \u003cdt\u003eWhat tubeless carbon rims are best for road cycling at 40mm and 25mm width?\u003c\/dt\u003e\n  \u003cdd\u003eThis rim meets ETRTO standards, verified at 375–430g, and provides performance for racing and long-distance rides.\u003c\/dd\u003e\n  \u003cdt\u003eShould I choose hookless or hooked for my road tubeless setup?\u003c\/dt\u003e\n  \u003cdd\u003eHookless supports modern tubeless, up to 72 psi with compliant tires. Hooked offers broader tire compatibility with traditional road clinchers.\u003c\/dd\u003e\n  \u003cdt\u003eIs sub-400g rim weight suitable for racing?\u003c\/dt\u003e\n  \u003cdd\u003e375–395g tiers minimize rotational weight for rapid acceleration, preferred by climbers and racers; consider tire fit for your use case.\u003c\/dd\u003e\n  \u003cdt\u003eWhat’s the advantage of 24mm vs 25mm internal width?\u003c\/dt\u003e\n  \u003cdd\u003e25mm allows wider tires for comfort and stability on rougher roads or ultradistance rides; 24mm prioritizes aero efficiency for road racing tires.\u003c\/dd\u003e\n  \u003cdt\u003eWhat tire sizes are recommended?\u003c\/dt\u003e\n  \u003cdd\u003e24mm inner: 25–28mm tires; 25mm inner: 25–32mm tires (see ETRTO guidelines).\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c Tubeless Carbon Road Rim 40mm – 24mm or 25mm Inner Width, Hook or Hookless, 375–430g\",\n  \"description\": \"700c Tubeless Carbon Road Rim – 40mm Height, 24\/25mm Inner Width Quick Answer: Engineered for competitive climbing, endurance road cycling, and high-performance racing, this 700c carbon rim features a 40mm deep V-profile, selectable 24mm or 25mm internal width, and choice of hookless or hooked bead. Weights verified: 430g (standard), 395g (superlight), 375g (ultralight). Supports modern tubeless and clincher systems. Maximum rider weight: 120kg. Complies with ETRTO 2021 for hookless. Backed by 3-year manufacturer warranty. Technical Specifications Parameter Value Rim Size 700C Rim Profile V Shape, 40mm deep Inner Width 24mm or 25mm (select) Outer Width 30mm Compliance ETRTO 2021 (hookless option) Weight 375–430g (verified tiers) ERD 558mm Strength \u0026gt;300kg compressive, \u0026gt;50kg lateral Spoke Hole Tension \u0026gt;280kg Recommended Tire Width 25–28mm (24mm inner), 25–32mm (25mm inner) Material Unidirectional carbon fiber with epoxy resin Country of Origin China Comparison: 24mm vs 25mm Inner Width 24mm : Optimized for 25–28mm tires, improved aerodynamics for road racing. 25mm : Supports up to 32mm tires, offering better volume for endurance and rougher road comfort. Use Cases Competitive Road Climbers : Ultralight 375g option minimizes inertia. Endurance Riders : 25mm width supports wider tires for comfort. Brands and Builders : Multiple weights and width options for custom wheelsets. Frequently Asked Questions What tubeless carbon rims are best for road cycling at 40mm and 25mm width? This rim meets ETRTO standards, verified at 375–430g, and provides performance for racing and long-distance rides. Should I choose hookless or hooked for my road tubeless setup? Hookless supports modern tubeless, up to 72 psi with compliant tires. Hooked offers broader tire compatibility with traditional road clinchers. Is sub-400g rim weight suitable for racing? 375–395g tiers minimize rotational weight for rapid acceleration, preferred by climbers and racers; consider tire fit for your use case. What’s the advantage of 24mm vs 25mm internal width? 25mm allows wider tires for comfort and stability on rougher roads or ultradistance rides; 24mm prioritizes aero efficiency for road racing tires. 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Designed for tubeless tires (33c–50c) and custom wheel builds, weights from 330g to 400g enable precise tuning of ride feel and total system weight. Validated by ISO 4210 standards, each rim is compression tested to \u0026gt;300kg and certified to \u0026gt;280kgf spoke tension—suited for high-performance racing, endurance, and technical mixed-terrain use.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications \u0026amp; Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Size:\u003c\/strong\u003e 700C (622mm BSD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Depth:\u003c\/strong\u003e 35mm aerodynamic V-section\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Widths:\u003c\/strong\u003e 24mm (for 33–42c), 25mm (for 40–50c tires)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Width:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (±10g):\u003c\/strong\u003e 330g \/ 350g \/ 380g \/ 400g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Tubeless-ready (6.5mm valve), disc brakes (center-lock and 6-bolt)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Unidirectional + woven carbon fiber laminate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e ISO 4210, compression \u0026amp; torsion tested\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow This Rim Compares\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eInner Width\u003c\/th\u003e\n\u003cth\u003eDepth\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eTubeless\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThis Rim\u003c\/td\u003e\n\u003ctd\u003e24\/25mm\u003c\/td\u003e\n\u003ctd\u003e35mm\u003c\/td\u003e\n\u003ctd\u003e330–400g\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD24-55H\u003c\/td\u003e\n\u003ctd\u003e24mm\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003ctd\u003e420g\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD25-29H\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e29mm\u003c\/td\u003e\n\u003ctd\u003e370g\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD25-34HX\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e34mm\u003c\/td\u003e\n\u003ctd\u003e390g\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKey Use-Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace Builds:\u003c\/strong\u003e Ultralight setup at 330g supports competitive cyclocross or gravel racing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-Road Customization:\u003c\/strong\u003e Versatile 24\/25mm widths for multiple tire sizes and surface conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSustainable Performance:\u003c\/strong\u003e High fatigue resistance and long-term durability, trusted by cycling brands across North America and Europe\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eWhat are the best lightweight carbon rims for gravel and cyclocross riding in 2026?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThis 700C carbon rim, available in 330–400g weights and 24\/25mm internal widths, competes among the lightest, durability-certified options for mixed-terrain racing and endurance cycling.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eShould I choose 24mm or 25mm inner width for tubeless gravel?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eFor 33–42c tires and fast mixed conditions, 24mm is optimal; for 40–50c high-volume gravel tires, 25mm offers improved sidewall support and comfort at lower pressures.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eIs the 35mm depth rim better for gravel versus 40mm or 50mm?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003e35mm rim depth balances aerodynamic benefit and crosswind stability, making it well-suited for varied gravel terrain. Deeper rims (40–55mm) add aero but may be heavier and less stable in gusts.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eAre these compatible with both center-lock and 6-bolt disc brakes?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes, the rim is designed for standard 700C disc-brake hubs supporting both center-lock and 6-bolt rotor systems.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eWhat testing\/certification does this rim have?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eCovers ISO 4210 forward compression (\u0026gt;300kg), torsion (\u0026gt;50kg), and \u0026gt;280kgf spoke tension for validated safety and longevity.\u003c\/p\u003e\u003c\/details\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700C Carbon Gravel\/Cyclocross Rim, 35mm Depth, 24\/25mm Inner, Tubeless, 330–400g\",\n  \"description\": \"Available in 24mm or 25mm internal width, this 700C carbon rim features a 35mm deep aerodynamic profile and is optimized for disc-brake gravel and cyclocross bikes. 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Available in four weight tiers — from a standard 395g down to an extreme-light 325g per rim — it supports both hooked (24mm inner width) and hookless (25mm inner width) tubeless configurations to suit a wide range of gravel tire setups from 38c to 50c.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Diameter\u003c\/td\u003e\n\u003ctd\u003e700c (29\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile Height\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eV-Shape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width (Hooked)\u003c\/td\u003e\n\u003ctd\u003e24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width (Hookless)\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e579mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction (Front)\u003c\/td\u003e\n\u003ctd\u003e7°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction (Rear)\u003c\/td\u003e\n\u003ctd\u003e5° \u0026amp; 7° (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin \/ Max Tire Pressure\u003c\/td\u003e\n\u003ctd\u003e100 \/ 125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRider Weight Limit\u003c\/td\u003e\n\u003ctd\u003e≤100 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Balance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWeight Variants\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eTier\u003c\/th\u003e\n\u003cth\u003eWeight per Rim\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal\u003c\/td\u003e\n\u003ctd\u003e395 ± 15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e365 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e345 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtreme Light\u003c\/td\u003e\n\u003ctd\u003e325 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eStructural Strength Testing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion:\u003c\/strong\u003e \u0026gt;50 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280 kg\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHooked vs. Hookless — Which Should You Choose?\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eHooked (24mm inner width):\u003c\/strong\u003e Compatible with a broader range of clincher and tubeless tires, including older tire standards. Recommended if you use multiple tire brands or frequently swap between clincher and tubeless setups.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHookless (25mm inner width):\u003c\/strong\u003e The 25mm internal width pairs optimally with modern tubeless gravel tires (38c–50c), reduces rim weight slightly, and improves rim-to-tire air seal consistency. Note: hookless rims require ETRTO-compliant tubeless tires and a maximum tire pressure of 73 psi per ETRTO 2023 hookless guidelines — verify your tire manufacturer's compatibility before building.\u003c\/p\u003e\u003ch2\u003eRim Width and Tire Performance\u003c\/h2\u003e\u003cp\u003eA 30mm outer \/ 24–25mm inner width is designed for gravel tires in the 38c–50c range. Wider inner rims reduce tire sidewall pinch, improve cornering stability, and support lower tire pressures for better compliance on loose or mixed-terrain surfaces. Running a 40c tire on this rim yields an effective mounted width approximately 2–3mm wider than the labeled tire size.\u003c\/p\u003e\u003ch2\u003eKnown Tradeoffs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThe extreme-light 325g tier prioritises minimum weight; riders over 80 kg or those riding aggressive rocky terrain may prefer the standard (395g) or superlight (365g) tier for added durability margin.\u003c\/li\u003e\n\u003cli\u003eMaximum tire pressure is capped at 125 psi (hooked) — not suitable for high-pressure road clincher applications.\u003c\/li\u003e\n\u003cli\u003eRider weight limit is ≤100 kg including rider, clothing, and kit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eAre these rims compatible with rim-brake setups?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo. These are disc-brake-only rims with no braking surface. They are designed exclusively for disc brake gravel and road disc builds.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the lightest option available?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe Extreme Light tier weighs 325 ± 10g per rim, making it one of the lightest 700c carbon gravel rims in the 40mm profile category. This tier is best suited to riders under 75 kg on moderate gravel terrain.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan I run tubeless without tape?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo. These rims require tubeless rim tape and a compatible tubeless valve. The spoke bed is not fully sealed from the factory; standard tubeless tape and sealant setup applies.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat spoke counts are available?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eSpoke hole counts and drilling patterns are available in standard configurations or custom options — contact Bola directly to confirm available drillings for your hub specification.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a warranty included?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Bola offers a three-year warranty covering manufacturing defects under normal use conditions.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c gravel super ultra or extreme light carbon rims 40mm high 30mm outer wide 24mm hooked or 25mm hookless inner wide tubeless offset ,Bola\",\n  \"description\": \"Bola 700c Carbon Gravel Rim — 40mm Profile, 30mm Outer Width, Tubeless Ready The Bola 700c carbon gravel rim delivers a 40mm aerodynamic profile and a 30mm outer width optimised for mixed-terrain gravel riding. Available in four weight tiers — from a standard 395g down to an extreme-light 325g per rim — it supports both hooked (24mm inner width) and hookless (25mm inner width) tubeless configurations to suit a wide range of gravel tire setups from 38c to 50c. Key Specifications Specification Value Rim Diameter 700c (29\\\") Rim Profile Height 40mm Rim Shape V-Shape Outer Width 30mm Inner Width (Hooked) 24mm Inner Width (Hookless) 25mm ERD 579mm Valve Hole Diameter 6.5mm (customisable) Spoke Hole Diameter 4.5mm (customisable) Assembly Hole Diameter 7.5mm (customisable) Nipple Direction (Front) 7° Nipple Direction (Rear) 5° \u0026amp; 7° (customisable) Min \/ Max Tire Pressure 100 \/ 125 psi Rider Weight Limit ≤100 kg Flatness Tolerance \u0026lt;0.15mm Roundness Tolerance \u0026lt;0.3mm Dynamic Balance \u0026lt;3g Weight Variants Tier Weight per Rim Normal 395 ± 15g Superlight 365 ± 10g Ultralight 345 ± 10g Extreme Light 325 ± 10g Structural Strength Testing Forward Compressive Strength: \u0026gt;300 kg Lateral Torsion: \u0026gt;50 kg Spoke Hole Tension: \u0026gt;280 kg Hooked vs. Hookless — Which Should You Choose? Hooked (24mm inner width): Compatible with a broader range of clincher and tubeless tires, including older tire standards. Recommended if you use multiple tire brands or frequently swap between clincher and tubeless setups. Hookless (25mm inner width): The 25mm internal width pairs optimally with modern tubeless gravel tires (38c–50c), reduces rim weight slightly, and improves rim-to-tire air seal consistency. Note: hookless rims require ETRTO-compliant tubeless tires and a maximum tire pressure of 73 psi per ETRTO 2023 hookless guidelines — verify your tire manufacturer's compatibility before building. Rim Width and Tire Performance A 30mm outer \/ 24–25mm inner width is designed for gravel tires in the 38c–50c range. Wider inner rims reduce tire sidewall pinch, improve cornering stability, and support lower tire pressures for better compliance on loose or mixed-terrain surfaces. Running a 40c tire on this rim yields an effective mounted width approximately 2–3mm wider than the labeled tire size. Known Tradeoffs The extreme-light 325g tier prioritises minimum weight; riders over 80 kg or those riding aggressive rocky terrain may prefer the standard (395g) or superlight (365g) tier for added durability margin. Maximum tire pressure is capped at 125 psi (hooked) — not suitable for high-pressure road clincher applications. Rider weight limit is ≤100 kg including rider, clothing, and kit. Frequently Asked Questions Are these rims compatible with rim-brake setups? No. These are disc-brake-only rims with no braking surface. They are designed exclusively for disc brake gravel and road disc builds. What is the lightest option available? The Extreme Light tier weighs 325 ± 10g per rim, making it one of the lightest 700c carbon gravel rims in the 40mm profile category. This tier is best suited to riders under 75 kg on moderate gravel terrain. Can I run tubeless without tape? No. These rims require tubeless rim tape and a compatible tubeless valve. The spoke bed is not fully sealed from the factory; standard tubeless tape and sealant setup applies. What spoke counts are available? Spoke hole counts and drilling patterns are available in standard configurations or custom options — contact Bola directly to confirm available drillings for your hub specification. Is a warranty included? Yes. 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Cases\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eLead Answer:\u003c\/strong\u003e Bola’s 700c asymmetric carbon gravel rim delivers a 30mm outer width and is offered in normal (405g), superlight (365g), and ultralight (335g) weight tiers. Designed for riders and brands prioritizing high-performance, lightweight construction, and durability in gravel and mixed terrain builds. EN 14781 compliant and tested to \u0026gt;300kg compressive strength.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 700c \/ ISO 622\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter width:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInner width:\u003c\/strong\u003e 24mm or 25mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRim depth:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e Asymmetric, low-profile V-shape\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Toray T700\/T800 carbon fiber composite\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable weights:\u003c\/strong\u003e 405±15g (normal), 365±10g (superlight), 335±10g (ultralight)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOffset:\u003c\/strong\u003e 2.6mm asymmetric\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTubeless compatible:\u003c\/strong\u003e Yes (hookless bead, verified with standard 6.5mm tubeless valves)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpoke Holes:\u003c\/strong\u003e Custom drilling on request, supports straight-pull or J-bend spokes (4.5mm nipple seat)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\/certifications:\u003c\/strong\u003e EN 14781; compressive strength \u0026gt;300kg; spoke tension \u0026gt;280kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWeight Tier Comparison \u0026amp; Use Cases\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eTier\u003c\/th\u003e\n      \u003cth\u003eWeight per Rim\u003c\/th\u003e\n      \u003cth\u003eBest For\u003c\/th\u003e\n      \u003cth\u003eRider Weight Limit\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNormal\u003c\/td\u003e\n      \u003ctd\u003e405±15g\u003c\/td\u003e\n      \u003ctd\u003eEndurance gravel, bikepacking, heavier loads\u003c\/td\u003e\n      \u003ctd\u003e≤ 120kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSuperlight\u003c\/td\u003e\n      \u003ctd\u003e365±10g\u003c\/td\u003e\n      \u003ctd\u003eAll-day gravel racing, mixed terrain, fast handling\u003c\/td\u003e\n      \u003ctd\u003e≤ 100kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eUltralight\u003c\/td\u003e\n      \u003ctd\u003e335±10g\u003c\/td\u003e\n      \u003ctd\u003eCompetitive climbing, lightweight builds\u003c\/td\u003e\n      \u003ctd\u003e≤ 80kg (best performance)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eTradeoff: Ultralight saves 70g per rim but has stricter weight and terrain limitations; Normal tier offers maximum stability for high-load scenarios.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eReal-World Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 700c \/ ISO 622 bikes for gravel, endurance, and all-road purposes\u003c\/li\u003e\n  \u003cli\u003eSupports tubeless or clincher tires from 32mm to 54mm width\u003c\/li\u003e\n  \u003cli\u003eCompatible with both standard disc brake and thru-axle wheel builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCertification \u0026amp; Quality Assurance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eConstructed in compliance with EN 14781 road bicycle rim safety standard\u003c\/li\u003e\n  \u003cli\u003eTested for \u0026gt;300kg forward compressive strength and \u0026gt;280kg spoke tension\u003c\/li\u003e\n  \u003cli\u003eThree-year warranty covering manufacturing defects\u003c\/li\u003e\n  \u003cli\u003eShips worldwide from China with custom options available for spoke drilling, logo, and finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: Is a 30mm wide carbon rim better for gravel?\u003c\/strong\u003e\u003cbr\u003eA: A 30mm rim optimizes stability and tire support for 32-54mm gravel tires, enhancing control on mixed terrain compared to narrower rims.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: What is the difference between superlight and ultralight tiers?\u003c\/strong\u003e\u003cbr\u003eA: Ultralight rims prioritize the lowest possible weight for climbing and racing at the expense of max rider weight and terrain toughness. Superlight balances racing agility with broader use-case and durability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: Why choose an asymmetric carbon rim?\u003c\/strong\u003e\u003cbr\u003eA: Asymmetric offset (2.6mm) improves spoke bracing angle, equalizing tension for a stronger, longer-lasting wheel—especially important for disc-equipped gravel bikes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: How much does a quality 700c gravel carbon rim weigh?\u003c\/strong\u003e\u003cbr\u003eA: Industry norms range from 335g (ultralight) to 405g (endurance\/all-purpose), slotting this offering among the lightest EN-certified options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSituational Relevance\u003c\/h3\u003e\n\u003cp\u003eThis rim is suitable for professional cycling teams, OEM\/ODM small-to-medium brands, and performance-focused individuals seeking a blend of lateral stiffness, low weight, and custom build options for gravel or all-road wheelsets at competitive global pricing.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c Asymmetric Carbon Gravel Rim 30mm Wide – Superlight \u0026 Ultralight Options | Bola\",\n  \"description\": \"700c Asymmetric Carbon Gravel Rim, 30mm Wide – Technical Details \u0026 Use Cases Lead Answer: Bola’s 700c asymmetric carbon gravel rim delivers a 30mm outer width and is offered in normal (405g), superlight (365g), and ultralight (335g) weight tiers. 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Key Specifications Diameter: 700c \/ ISO 622 Outer width: 30mm Inner width: 24mm or 25mm Rim depth: 30mm Profile: Asymmetric, low-profile V-shape Construction: Toray T700\/T800 carbon fiber composite Available weights: 405±15g (normal), 365±10g (superlight), 335±10g (ultralight) Offset: 2.6mm asymmetric Tubeless compatible: Yes (hookless bead, verified with standard 6.5mm tubeless valves) Spoke Holes: Custom drilling on request, supports straight-pull or J-bend spokes (4.5mm nipple seat) Standards\/certifications: EN 14781; compressive strength \u003e300kg; spoke tension \u003e280kg Weight Tier Comparison \u0026 Use Cases Tier Weight per Rim Best For Rider Weight Limit Normal 405±15g Endurance gravel, bikepacking, heavier loads ≤ 120kg Superlight 365±10g All-day gravel racing, mixed terrain, fast handling ≤ 100kg Ultralight 335±10g Competitive climbing, lightweight builds ≤ 80kg (best performance) Tradeoff: Ultralight saves 70g per rim but has stricter weight and terrain limitations; Normal tier offers maximum stability for high-load scenarios. Real-World Compatibility Fits 700c \/ ISO 622 bikes for gravel, endurance, and all-road purposes Supports tubeless or clincher tires from 32mm to 54mm width Compatible with both standard disc brake and thru-axle wheel builds Certification \u0026 Quality Assurance Constructed in compliance with EN 14781 road bicycle rim safety standard Tested for \u003e300kg forward compressive strength and \u003e280kg spoke tension Three-year warranty covering manufacturing defects Ships worldwide from China with custom options available for spoke drilling, logo, and finish Frequently Asked Questions Q: Is a 30mm wide carbon rim better for gravel? A: A 30mm rim optimizes stability and tire support for 32-54mm gravel tires, enhancing control on mixed terrain compared to narrower rims. Q: What is the difference between superlight and ultralight tiers? A: Ultralight rims prioritize the lowest possible weight for climbing and racing at the expense of max rider weight and terrain toughness. 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Multiple weight options (330g–400g) support various riding styles, from competitive XC to endurance training.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRim Depth: 35mm\u003c\/li\u003e\n  \u003cli\u003eInternal Width: 24mm\u003c\/li\u003e\n  \u003cli\u003eExternal Width: 30mm\u003c\/li\u003e\n  \u003cli\u003eDiameter: 700c (ETRTO 622)\u003c\/li\u003e\n  \u003cli\u003eValve Compatibility: Presta\u003c\/li\u003e\n  \u003cli\u003eMaterial: High-strength carbon fiber (UD\/3K\/12K weave as available)\u003c\/li\u003e\n  \u003cli\u003eTubeless Ready: Yes (ISO 4210 tested)\u003c\/li\u003e\n  \u003cli\u003eBrake Type: Disc only\u003c\/li\u003e\n  \u003cli\u003eRim Profile: Asymmetric (improves spoke tension balance)\u003c\/li\u003e\n  \u003cli\u003eWeight Options: Standard (400±15g), Superlight (370±10g), Ultralight (350±10g), Extreme Light (330±10g)\u003c\/li\u003e\n  \u003cli\u003eWarranty: 3 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWeight \u0026amp; Use Comparison Table\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eRecommended Use\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e400 ± 15g\u003c\/td\u003e\n\u003ctd\u003eAll-weather endurance, training\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e370 ± 10g\u003c\/td\u003e\n\u003ctd\u003eGran fondo, mixed-surface racing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e350 ± 10g\u003c\/td\u003e\n\u003ctd\u003eXC race, climbing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eExtreme Light\u003c\/td\u003e\n\u003ctd\u003e330 ± 10g\u003c\/td\u003e\n\u003ctd\u003eElite XC, strict weight targets\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is a 35mm carbon rim suitable for gravel and cyclocross?\u003c\/strong\u003e\u003cbr\u003eA: Yes. 35mm provides aerodynamic benefits and improved stability on mixed terrain, while maintaining reasonable weight for competitive racing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How does asymmetric rim profile help?\u003c\/strong\u003e\u003cbr\u003eA: Asymmetric design redistributes spoke angles, resulting in better spoke tension balance and longer wheel lifespan under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the difference between Superlight and Ultralight grades?\u003c\/strong\u003e\u003cbr\u003eA: Superlight (370g) uses slightly thicker walls for more durability; Ultralight (350g) prioritizes weight saving for uphill and XC race use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Are these rims compatible with 24mm inner width tubeless tires?\u003c\/strong\u003e\u003cbr\u003eA: Yes. 24mm inner width supports a wide range of 700c tubeless-ready gravel and XC tires (32–50mm recommended).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Do the rims have certifications?\u003c\/strong\u003e\u003cbr\u003eA: Rims are tested to ISO 4210 standards for bicycle durability and impact resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUsage and Installation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with disc brake systems only.\u003c\/li\u003e\n\u003cli\u003eTubeless setup requires appropriate rim tape and tubeless valves (not included).\u003c\/li\u003e\n\u003cli\u003eOptimal for custom wheel building for small brands, pro teams, and performance-oriented cyclists.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c Asymmetric Tubeless Ready Carbon Rim 35mm Deep 24mm Inner Width – Gravel \u0026 Cross-Country\",\n  \"description\": \"700c Asymmetric Tubeless Ready Carbon Rim – 35mm Deep, 24mm Inner Width Designed for gravel, cyclocross, and cross-country cycling, this 700c carbon rim features a 35mm aerodynamic depth, asymmetric profile for improved spoke tension balance, and tubeless compatibility. 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Tubeless Rim — 50mm Profile, 30mm Outer Width\u003c\/h2\u003e\u003cp\u003eThis 700c carbon tubeless rim delivers a verified weight range of \u003cstrong\u003e375g–470g per rim\u003c\/strong\u003e (four weight tiers available) across a 50mm aerodynamic profile and 30mm outer \/ 24–25mm inner width. Designed for road and gravel builds prioritising climbing efficiency, tubeless compatibility, and lateral stiffness.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e700c (ISO 622mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eV-shape, 50mm height\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e24mm or 25mm (specify at order)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e538mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Normal)\u003c\/td\u003e\n\u003ctd\u003e470 ± 15g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Superlight)\u003c\/td\u003e\n\u003ctd\u003e430 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Ultralight)\u003c\/td\u003e\n\u003ctd\u003e400 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Extreme Light)\u003c\/td\u003e\n\u003ctd\u003e375 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;280 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Equilibrium\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3g imbalance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Offset (Front)\u003c\/td\u003e\n\u003ctd\u003e7°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Offset (Rear)\u003c\/td\u003e\n\u003ctd\u003e5° or 7° (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTyre Pressure Range\u003c\/td\u003e\n\u003ctd\u003e100–125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e120 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWeight Tier Guide — Which Option Is Right for Your Build?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNormal (470g):\u003c\/strong\u003e Recommended for all-day training and heavier riders up to 120 kg. Higher spoke tension tolerance provides long-term durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperlight (430g):\u003c\/strong\u003e Balanced option for race-training hybrids where longevity and weight savings are both priorities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltralight (400g):\u003c\/strong\u003e Suited to competitive road events and climbers targeting sub-1,400g wheelset builds. Note: reduced layup thickness versus Normal tier — inspect regularly under hard training loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtreme Light (375g):\u003c\/strong\u003e Race-day performance tier. Best for riders under 75 kg on smooth road surfaces. Not recommended for prolonged training use or rough tarmac.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e30mm Wide Rim — Tubeless Compatibility\u003c\/h2\u003e\u003cp\u003eA 30mm outer \/ 24–25mm inner width accommodates tubeless tyres from \u003cstrong\u003e25c to 32c\u003c\/strong\u003e, optimising the tyre profile for improved contact patch and cornering grip compared to narrower 19–21mm internal rims. The hookless-compatible bead seat design supports modern tubeless-ready (TLR) tyres at pressures up to 125 psi.\u003c\/p\u003e\u003ch2\u003eKnown Tradeoffs\u003c\/h2\u003e\u003cp\u003eThe 50mm rim height provides measurable aerodynamic advantage at speeds above 35 km\/h, but adds \u003cstrong\u003eapproximately 80–120g per rim\u003c\/strong\u003e versus a 35mm equivalent — a relevant consideration for technical climbing stages where rotating mass outweighs aero gain. Riders targeting pure climbing builds may prefer a 35mm profile; this 50mm rim is best suited to \u003cstrong\u003eflat-to-rolling terrain and criterium racing\u003c\/strong\u003e.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the best carbon tubeless rim for lightweight road cycling builds?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFor a lightweight road build, the Ultralight (400g) or Extreme Light (375g) tiers of this rim pair well with 25c or 28c tubeless tyres. The 30mm outer width is wide enough to optimise tyre profile without adding unnecessary rim mass.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow much does rim weight affect climbing performance?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eRotating mass has approximately 1.5–2× the effect of static frame weight on climbing acceleration. Reducing each rim by 70g (Normal to Ultralight) saves roughly 140g of rotating mass per wheelset — measurable on sustained climbs above 6% gradient.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between 50mm and 60mm carbon rims for training?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e50mm rims offer a better crosswind stability-to-aero balance for everyday training, particularly in variable wind conditions. 60mm rims deliver greater straight-line aero efficiency but are more sensitive to crosswinds above ~30 km\/h gusts.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre 30mm wide carbon rims better than 25mm for tubeless tyre grip?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, for tyres 25c and wider. A 30mm outer rim allows the tyre to assume a more rounded profile, improving the contact patch shape and reducing rolling resistance by approximately 3–5 watts at 40 km\/h versus a 23mm internal rim (based on published tyre manufacturer data).\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat should I look for when buying ultralight carbon rims under 400g?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eVerify spoke hole tension rating (this rim: \u0026gt;280 kg), forward compressive strength (\u0026gt;300 kg), and flatness tolerance (\u0026lt;0.15mm). Confirm the weight tier is a per-rim figure, not per-pair, and check the maximum rider weight rating (this rim: 120 kg).\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c super or ultra even extreme light bici tubeless carbon rims 50mm high profile 30mm outer wide,Bola\",\n  \"description\": \"700c Carbon Tubeless Rim — 50mm Profile, 30mm Outer Width This 700c carbon tubeless rim delivers a verified weight range of 375g–470g per rim (four weight tiers available) across a 50mm aerodynamic profile and 30mm outer \/ 24–25mm inner width. Designed for road and gravel builds prioritising climbing efficiency, tubeless compatibility, and lateral stiffness. Technical Specifications Parameter Value Diameter 700c (ISO 622mm) Rim Profile V-shape, 50mm height Outer Width 30mm Inner Width 24mm or 25mm (specify at order) ERD 538mm Weight (Normal) 470 ± 15g per rim Weight (Superlight) 430 ± 10g per rim Weight (Ultralight) 400 ± 10g per rim Weight (Extreme Light) 375 ± 10g per rim Forward Compressive Strength \u0026gt;300 kg Lateral Torsion \u0026gt;50 kg Spoke Hole Tension \u0026gt;280 kg Dynamic Equilibrium \u0026lt;3g imbalance Flatness Tolerance \u0026lt;0.15mm Roundness Tolerance \u0026lt;0.3mm Valve Hole Diameter 6.5mm (customisable) Spoke Hole Diameter 4.5mm (customisable) Assembly Hole Diameter 7.5mm (customisable) Nipple Offset (Front) 7° Nipple Offset (Rear) 5° or 7° (customisable) Tyre Pressure Range 100–125 psi Max Rider Weight 120 kg Weight Tier Guide — Which Option Is Right for Your Build? Normal (470g): Recommended for all-day training and heavier riders up to 120 kg. Higher spoke tension tolerance provides long-term durability. Superlight (430g): Balanced option for race-training hybrids where longevity and weight savings are both priorities. Ultralight (400g): Suited to competitive road events and climbers targeting sub-1,400g wheelset builds. Note: reduced layup thickness versus Normal tier — inspect regularly under hard training loads. Extreme Light (375g): Race-day performance tier. Best for riders under 75 kg on smooth road surfaces. Not recommended for prolonged training use or rough tarmac. 30mm Wide Rim — Tubeless Compatibility A 30mm outer \/ 24–25mm inner width accommodates tubeless tyres from 25c to 32c , optimising the tyre profile for improved contact patch and cornering grip compared to narrower 19–21mm internal rims. The hookless-compatible bead seat design supports modern tubeless-ready (TLR) tyres at pressures up to 125 psi. 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Extremelight","offer_id":48129024327934,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Standard","offer_id":48129024360702,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Superlight","offer_id":48129024393470,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Ultralight","offer_id":48129024426238,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Extremelight","offer_id":48129024459006,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/gravel_rims_5eb838d0-0d0e-4105-b730-1e1b23f24097.png?v=1780298319"},{"product_id":"bola-650b-asymmetric-carbon-gravel-rim-30mm-deep-tubeless-ready","title":"Bola 650B Asymmetric Carbon Gravel Rim, 30mm Deep, 24\/25mm Inner, Tubeless, 330–395g","description":"\u003ch2\u003eBola 650B Asymmetric Carbon Gravel Rim – For Lightweight, High-Performance 650B Builds\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSummary:\u003c\/strong\u003e Bola 650B asymmetric carbon gravel rim offers 30mm depth and a choice of 24mm or 25mm inner width for optimal gravel race performance. Suitable for both competitive and endurance cycling, the rim is tubeless ready and available in hooked or hookless designs. Weight ranges from 330g (Ultralight) to 395g (Normal) per rim. Designed for disc brake systems and tire compatibility of 38c to 50c.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Technical Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Size:\u003c\/strong\u003e 650B (27.5\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e Asymmetric U-shaped, 30mm deep, 30mm outer width\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Width Options:\u003c\/strong\u003e 24mm or 25mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBead Design:\u003c\/strong\u003e Hooked or hookless options\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight Range:\u003c\/strong\u003e 330g (Ultralight), 355g (Superlight), 395g (Normal) ± tolerance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Rim Diameter (ERD):\u003c\/strong\u003e 540mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Carbon fiber (layup optimized for strength-to-weight)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless Ready:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake Compatibility:\u003c\/strong\u003e Disc only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison Table\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eBola 650B\u003c\/th\u003e\n\u003cth\u003eTypical Competitor\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e34–54mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e24\/25mm\u003c\/td\u003e\n\u003ctd\u003e25–32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e330–395g\u003c\/td\u003e\n\u003ctd\u003e390–460g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBead\u003c\/td\u003e\n\u003ctd\u003eHooked\/Hookless\u003c\/td\u003e\n\u003ctd\u003eUsually Hookless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAsymmetric\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOccasional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTubeless Ready\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eEN 14766, ISO 4210-7\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 Years\u003c\/td\u003e\n\u003ctd\u003e1–3 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBuyer FAQs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the optimal inner width for gravel tires (38c–50c)? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e 24–25mm inner width supports a broad range of gravel tires with stable sidewalls and secure tubeless fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is asymmetric rim design beneficial for gravel bikes?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. Asymmetric profiles improve spoke tension balance and wheel durability, especially under rough-terrain stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Should I choose hooked or hookless for tubeless? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Hookless supports lower pressures, but check your tire maker for compatibility; hooked is more widely compatible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How light is too light for competitive gravel riding? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The Ultralight 330g option targets competitors prioritizing acceleration; Superlight and Normal balance weight with durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What standards apply for impact and quality? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This rim exceeds EN 14766 and ISO 4210-7 impact and fatigue standards for off-road wheels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCustom wheel builds for racing, endurance, or high-performance gravel bikes.\u003c\/li\u003e\n\u003cli\u003eRiders needing lightweight but robust rims for mixed or demanding conditions.\u003c\/li\u003e\n\u003cli\u003eSmall or medium cycling brands requiring a versatile, quality-assured carbon rim component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Design is optimized for high-endurance and racing scenarios but may show more impact deformation at pressure extremes compared with heavier alternatives.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 28\/28 \/ Normal","offer_id":48093035004158,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 28\/28 \/ Super 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Normal","offer_id":48093035725054,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Super Light","offer_id":48093035757822,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/650b_rims.jpg?v=1780298319"},{"product_id":"bola-27-5-carbon-gravel-rim-30mm-profile-25mm-inner-tubeless","title":"Bola 27.5\" Carbon Gravel Rim, 30mm Profile, 25mm Inner Width, Tubeless Ready","description":"\u003ch2\u003eBola 27.5\" Carbon Gravel Rim – 30mm Profile, 25mm Inner Width, Tubeless Ready\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDirect answer:\u003c\/strong\u003e The Bola 27.5\" carbon gravel rim features a 30mm aerodynamic profile and 25mm internal width, engineered for competitive gravel and all-terrain cycling. Compatible with tires 1.9\"–2.4\", its tubeless-ready, hookless-compatible design delivers stability, low rolling resistance, and improved puncture protection on diverse surfaces. Available in Standard (395g ±15g) and Superlight (355g ±10g) layups—both precision-built with extensive quality controls and custom drill options.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Size\u003c\/td\u003e\n\u003ctd\u003e27.5\" (650B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile Height\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Outer Width\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Inner Width\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e540mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Standard)\u003c\/td\u003e\n\u003ctd\u003e395 ± 15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Superlight)\u003c\/td\u003e\n\u003ctd\u003e355 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eV-shape, Hookless Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole\u003c\/td\u003e\n\u003ctd\u003e6.5mm (custom options available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh modulus carbon fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Compatibility\u003c\/td\u003e\n\u003ctd\u003e1.9\"–2.4\" (tubeless, clincher)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc Brake\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eUse-Case Comparison\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGravel and mixed terrain\u003c\/strong\u003e: Wide 25mm internal width supports stability and optimal tire shape for unpaved roads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndurance and light trail\u003c\/strong\u003e: Low rim weight enables responsive handling and acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional and custom builds\u003c\/strong\u003e: Factory drilling supports unique hub\/drive configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs a 25mm inner width rim good for gravel riding?\u003c\/strong\u003e\u003cbr\u003eYes. 25mm inner width enhances tire support for gravel tires (1.9\"–2.4\"), improving grip and reducing pinch flats on rough or variable surfaces. \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does 30mm rim depth compare to 40mm?\u003c\/strong\u003e\u003cbr\u003e30mm offers a balance of low aerodynamic drag and responsive handling; deeper profiles increase aerodynamic efficiency but may add weight and stiffness, impacting comfort and acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre these rims certified or lab-tested?\u003c\/strong\u003e\u003cbr\u003eEach rim is batch-tested for maximum spoke tension (\u0026gt;280kg) and impact (per ISO 4210) as part of our QC program.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre tubeless carbon rims beneficial for 27.5 inch builds?\u003c\/strong\u003e\u003cbr\u003eYes, they enable lower tire pressures, reduce puncture risk, and improve comfort and performance for both gravel and MTB uses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShould I choose Superlight or Standard?\u003c\/strong\u003e\u003cbr\u003eSuperlight rims (355g) support ultra-light builds for race-focused performance; Standard (395g) provides robust durability with minimal weight trade-off. Actual selection depends on rider weight, use-case, and desired wheel characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and Quality Assurance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3 years, structural defects covered.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Options:\u003c\/strong\u003e Drilling patterns and finish customization supported for OEM\/brand builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Bola 27.5\\\" Carbon Gravel Rim – 30mm Profile, 25mm Inner Width, Tubeless Ready\",\n  \"description\": \"Bola 27.5\\\" Carbon Gravel Rim – 30mm Profile, 25mm Inner Width, Tubeless Ready Direct answer: The Bola 27.5\\\" carbon gravel rim features a 30mm aerodynamic profile and 25mm internal width, engineered for competitive gravel and all-terrain cycling. Compatible with tires 1.9\\\"–2.4\\\", its tubeless-ready, hookless-compatible design delivers stability, low rolling resistance, and improved puncture protection on diverse surfaces. Available in Standard (395g ±15g) and Superlight (355g ±10g) layups—both precision-built with extensive quality controls and custom drill options. Technical Specifications Feature Specification Wheel Size 27.5\\\" (650B) Rim Profile Height 30mm Rim Outer Width 30mm Rim Inner Width 25mm ERD 540mm Weight (Standard) 395 ± 15g Weight (Superlight) 355 ± 10g Rim Shape V-shape, Hookless Compatible Valve Hole 6.5mm (custom options available) Material High modulus carbon fiber Tire Compatibility 1.9\\\"–2.4\\\" (tubeless, clincher) Disc Brake Yes Use-Case Comparison Gravel and mixed terrain : Wide 25mm internal width supports stability and optimal tire shape for unpaved roads. Endurance and light trail : Low rim weight enables responsive handling and acceleration. Professional and custom builds : Factory drilling supports unique hub\/drive configurations. Frequently Asked Questions Is a 25mm inner width rim good for gravel riding? Yes. 25mm inner width enhances tire support for gravel tires (1.9\\\"–2.4\\\"), improving grip and reducing pinch flats on rough or variable surfaces. How does 30mm rim depth compare to 40mm? 30mm offers a balance of low aerodynamic drag and responsive handling; deeper profiles increase aerodynamic efficiency but may add weight and stiffness, impacting comfort and acceleration. Are these rims certified or lab-tested? Each rim is batch-tested for maximum spoke tension (\u003e280kg) and impact (per ISO 4210) as part of our QC program. Are tubeless carbon rims beneficial for 27.5 inch builds? Yes, they enable lower tire pressures, reduce puncture risk, and improve comfort and performance for both gravel and MTB uses. Should I choose Superlight or Standard? Superlight rims (355g) support ultra-light builds for race-focused performance; Standard (395g) provides robust durability with minimal weight trade-off. Actual selection depends on rider weight, use-case, and desired wheel characteristics. Warranty and Quality Assurance Warranty: 3 years, structural defects covered. 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for cross-country racing and all-mountain trail riding. Available in three weight tiers: \u003cstrong\u003eNormal (370 ±15g)\u003c\/strong\u003e, \u003cstrong\u003eSuperlight (325 ±10g)\u003c\/strong\u003e, and \u003cstrong\u003eUltralight (300 ±10g)\u003c\/strong\u003e per rim.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Size\u003c\/td\u003e\n\u003ctd\u003e29er (ERD: 589mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile Height\u003c\/td\u003e\n\u003ctd\u003e23mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e26mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape (asymmetric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Normal\u003c\/td\u003e\n\u003ctd\u003e370 ±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Superlight\u003c\/td\u003e\n\u003ctd\u003e325 ±10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Ultralight\u003c\/td\u003e\n\u003ctd\u003e300 ±10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;50kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;280kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Equilibrium\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Angle\u003c\/td\u003e\n\u003ctd\u003eLeft 5°, Right 7° (or custom)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (or custom)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (or custom)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (or custom)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e45–65 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eDesign Rationale: Why Asymmetric?\u003c\/h2\u003e\u003cp\u003eThe asymmetric spoke bed offsets the spoke holes to equalise tension between drive-side and non-drive-side spokes. This reduces the spoke tension differential — a known cause of wheel fatigue and spoke breakage — resulting in a more durable, more evenly loaded wheel structure. The 26mm inner width accommodates 2.2–2.6-inch tubeless tires with an optimal casing spread for grip and rolling efficiency on XC and trail terrain.\u003c\/p\u003e\u003ch2\u003eWeight Tier Comparison\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eTier\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003cth\u003eTradeoff\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal\u003c\/td\u003e\n\u003ctd\u003e370 ±15g\u003c\/td\u003e\n\u003ctd\u003eEnduro, aggressive trail, heavier riders\u003c\/td\u003e\n\u003ctd\u003eHeavier, but maximises structural margin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e325 ±10g\u003c\/td\u003e\n\u003ctd\u003eAll-mountain, trail racing\u003c\/td\u003e\n\u003ctd\u003eBalanced weight-to-durability ratio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e300 ±10g\u003c\/td\u003e\n\u003ctd\u003eXC racing, weight-optimised builds\u003c\/td\u003e\n\u003ctd\u003eThinner layup; suits riders under 75kg and smoother XC trails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eNote: The Ultralight variant is optimised for competitive XC use. Riders above 80kg or riding highly technical, rock-heavy terrain are advised to select the Normal or Superlight tier to maintain structural safety margins.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eCustomisation Options\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpoke hole count: configurable on request\u003c\/li\u003e\n\u003cli\u003eValve hole diameter: 6.5mm standard or custom\u003c\/li\u003e\n\u003cli\u003eSpoke hole diameter: 4.5mm standard or custom\u003c\/li\u003e\n\u003cli\u003eAssembly hole diameter: 7.5mm standard or custom\u003c\/li\u003e\n\u003cli\u003eNipple angle: Left 5° \/ Right 7° standard or custom\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat tire widths are compatible with this rim's 26mm inner width?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA 26mm inner width is ETRTO-compatible with 2.2–2.6-inch (56–66mm) mountain bike tires. It provides an optimal casing spread for both XC race and trail-oriented tires at 45–65 psi tubeless pressures.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between the Ultralight and Normal weight versions?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe Ultralight (300 ±10g) uses a thinner carbon layup to reduce weight for XC racing. The Normal (370 ±15g) uses a thicker layup for greater impact resistance. Both share identical spoke tension strength (\u0026gt;280kg) and forward compressive strength (\u0026gt;300kg).\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre asymmetric rims worth it for 29er XC and trail builds?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Asymmetric rims equalise drive-side and non-drive-side spoke tension, reducing fatigue-related spoke failure — a measurable advantage in 29er builds where the larger wheel diameter increases spoke tension variance.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs this rim tubeless-ready?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe U-shape profile and 6.5mm valve hole are compatible with tubeless setups. A tubeless rim tape and valve are required and not included.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the maximum rider weight?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe rated maximum rider weight is 100kg across all weight tiers. Riders approaching this limit are recommended to select the Normal weight variant for maximum structural margin.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes Bola offer a warranty on these rims?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Bola provides a three-year warranty covering manufacturing defects on carbon rims.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Asymmetric 29er ultra light carbon mountain bike rim 23mm high 26mm inner wide for XC or all trail,superlight optional Bola\",\n  \"description\": \"Bola Asymmetric Carbon 29er MTB Rim — 23mm Profile, 26mm Inner Width This asymmetric carbon rim delivers a 23mm profile height and 26mm inner width in a 29-inch format, purpose-built for cross-country racing and all-mountain trail riding. Available in three weight tiers: Normal (370 ±15g) , Superlight (325 ±10g) , and Ultralight (300 ±10g) per rim. Key Specifications Parameter Value Rim Size 29er (ERD: 589mm) Rim Profile Height 23mm Outer Width 32mm Inner Width 26mm Rim Shape U-shape (asymmetric) Weight — Normal 370 ±15g Weight — Superlight 325 ±10g Weight — Ultralight 300 ±10g Forward Compressive Strength \u0026gt;300kg Lateral Torsion Resistance \u0026gt;50kg Spoke Hole Tension Strength \u0026gt;280kg Dynamic Equilibrium \u0026lt;3g Flatness Tolerance \u0026lt;0.15mm Roundness Tolerance \u0026lt;0.3mm Nipple Angle Left 5°, Right 7° (or custom) Valve Hole Diameter 6.5mm (or custom) Spoke Hole Diameter 4.5mm (or custom) Assembly Hole Diameter 7.5mm (or custom) Tire Pressure Range 45–65 psi Max Rider Weight 100kg Design Rationale: Why Asymmetric? The asymmetric spoke bed offsets the spoke holes to equalise tension between drive-side and non-drive-side spokes. This reduces the spoke tension differential — a known cause of wheel fatigue and spoke breakage — resulting in a more durable, more evenly loaded wheel structure. The 26mm inner width accommodates 2.2–2.6-inch tubeless tires with an optimal casing spread for grip and rolling efficiency on XC and trail terrain. Weight Tier Comparison Tier Weight Best For Tradeoff Normal 370 ±15g Enduro, aggressive trail, heavier riders Heavier, but maximises structural margin Superlight 325 ±10g All-mountain, trail racing Balanced weight-to-durability ratio Ultralight 300 ±10g XC racing, weight-optimised builds Thinner layup; suits riders under 75kg and smoother XC trails Note: The Ultralight variant is optimised for competitive XC use. Riders above 80kg or riding highly technical, rock-heavy terrain are advised to select the Normal or Superlight tier to maintain structural safety margins. Customisation Options Spoke hole count: configurable on request Valve hole diameter: 6.5mm standard or custom Spoke hole diameter: 4.5mm standard or custom Assembly hole diameter: 7.5mm standard or custom Nipple angle: Left 5° \/ Right 7° standard or custom Frequently Asked Questions What tire widths are compatible with this rim's 26mm inner width? A 26mm inner width is ETRTO-compatible with 2.2–2.6-inch (56–66mm) mountain bike tires. It provides an optimal casing spread for both XC race and trail-oriented tires at 45–65 psi tubeless pressures. What is the difference between the Ultralight and Normal weight versions? The Ultralight (300 ±10g) uses a thinner carbon layup to reduce weight for XC racing. The Normal (370 ±15g) uses a thicker layup for greater impact resistance. Both share identical spoke tension strength (\u0026gt;280kg) and forward compressive strength (\u0026gt;300kg). Are asymmetric rims worth it for 29er XC and trail builds? Yes. Asymmetric rims equalise drive-side and non-drive-side spoke tension, reducing fatigue-related spoke failure — a measurable advantage in 29er builds where the larger wheel diameter increases spoke tension variance. Is this rim tubeless-ready? The U-shape profile and 6.5mm valve hole are compatible with tubeless setups. A tubeless rim tape and valve are required and not included. What is the maximum rider weight? The rated maximum rider weight is 100kg across all weight tiers. Riders approaching this limit are recommended to select the Normal weight variant for maximum structural margin. Does Bola offer a warranty on these rims? Yes. 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At 300–375g per rim depending on layup grade, it offers a verified weight advantage over comparable alloy rims (typically 450–550g) while maintaining structural integrity for riders up to 100kg.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Diameter\u003c\/td\u003e\n\u003ctd\u003e29er (ISO 622mm BSD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile Height\u003c\/td\u003e\n\u003ctd\u003e23mm (low-profile XC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e34mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD (Effective Rim Diameter)\u003c\/td\u003e\n\u003ctd\u003e592mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape hookless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Standard\u003c\/td\u003e\n\u003ctd\u003e375 ± 15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Superlight\u003c\/td\u003e\n\u003ctd\u003e330 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Ultralight\u003c\/td\u003e\n\u003ctd\u003e300 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e45–65 psi (hookless limit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction\u003c\/td\u003e\n\u003ctd\u003eLeft 5° \/ Right 7° (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eStructural Strength Data\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion Resistance:\u003c\/strong\u003e \u0026gt;50kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium (imbalance):\u003c\/strong\u003e \u0026lt;3g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlatness Tolerance:\u003c\/strong\u003e \u0026lt;0.15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoundness Tolerance:\u003c\/strong\u003e \u0026lt;0.3mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHookless Design — What It Means for Your Build\u003c\/h2\u003e\u003cp\u003eHookless rims omit the traditional bead hook, reducing rim wall mass and enabling a more uniform carbon layup. This design is compatible with tubeless-ready tires that meet ETRTO hookless standards. \u003cstrong\u003eImportant:\u003c\/strong\u003e hookless rims require tubeless-specific tires and are limited to a maximum tire pressure of 65 psi. Clincher tires with inner tubes are not recommended on this rim.\u003c\/p\u003e\u003ch2\u003eCompatible Tire Widths\u003c\/h2\u003e\u003cp\u003eThe 28mm inner width is optimized for 2.1–2.4 inch (53–61mm) XC and trail tires. 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Reduced impact tolerance compared to standard grade.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKnown Tradeoffs\u003c\/h2\u003e\u003cp\u003eWhile the hookless construction saves weight and simplifies layup consistency, it caps maximum tire pressure at 65 psi and requires ETRTO-compliant tubeless tires. Riders requiring pressures above 65 psi or using clincher tires should select a hooked-bead carbon rim instead.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: How light should a carbon 29er rim be for competitive XC racing?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Most competitive XC rims weigh between 280–360g. This rim's ultralight grade at 300 ± 10g sits within that range, while the superlight grade (330g) offers a more durable race option.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Is a 28mm inner width good for tubeless mountain bike tires?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Yes. ETRTO and most tire manufacturers recommend 25–30mm inner width for 2.1–2.4 inch MTB tires. At 28mm, this rim is well-positioned for XC and light trail use.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What is the difference between hookless and hooked carbon rims?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Hooked rims have a retaining bead that supports higher pressure and is compatible with standard clincher tires. 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Contact the manufacturer with your build specification.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Offset 29 inch extralight MTB tubeless hookless carbon bicicleta rim 23mm low profile 28mm inner wide for cross-country or mountain riding Bola\",\n  \"description\": \"29er Hookless Carbon MTB Rim — 23mm Profile | 28mm Inner Width | Tubeless Ready The Bola MTB34-C23-29 is a hookless, tubeless-compatible carbon fiber rim engineered for 29-inch cross-country and trail mountain bikes. At 300–375g per rim depending on layup grade, it offers a verified weight advantage over comparable alloy rims (typically 450–550g) while maintaining structural integrity for riders up to 100kg. Key Specifications Specification Value Rim Diameter 29er (ISO 622mm BSD) Rim Profile Height 23mm (low-profile XC) Inner Width 28mm Outer Width 34mm ERD (Effective Rim Diameter) 592mm Rim Shape U-shape hookless Weight — Standard 375 ± 15g Weight — Superlight 330 ± 10g Weight — Ultralight 300 ± 10g Tire Pressure Range 45–65 psi (hookless limit) Max Rider Weight 100kg Spoke Hole Diameter 4.5mm (customizable) Valve Hole Diameter 6.5mm (customizable) Assembly Hole Diameter 7.5mm (customizable) Nipple Direction Left 5° \/ Right 7° (customizable) Structural Strength Data Forward Compressive Strength: \u0026gt;300kg Lateral Torsion Resistance: \u0026gt;50kg Spoke Hole Tension: \u0026gt;280kg Dynamic Equilibrium (imbalance): \u0026lt;3g Flatness Tolerance: \u0026lt;0.15mm Roundness Tolerance: \u0026lt;0.3mm Hookless Design — What It Means for Your Build Hookless rims omit the traditional bead hook, reducing rim wall mass and enabling a more uniform carbon layup. This design is compatible with tubeless-ready tires that meet ETRTO hookless standards. Important: hookless rims require tubeless-specific tires and are limited to a maximum tire pressure of 65 psi. Clincher tires with inner tubes are not recommended on this rim. Compatible Tire Widths The 28mm inner width is optimized for 2.1–2.4 inch (53–61mm) XC and trail tires. This width improves tire casing support, reduces pinch flat risk, and promotes a rounder tire profile for better cornering traction on hardpack and loose terrain. Weight Grade Options Standard (375 ± 15g): Best for trail and endurance riders prioritizing durability over minimum weight. Superlight (330 ± 10g): Balanced option for competitive XC riders seeking rotational weight savings without maximum layup risk. Ultralight (300 ± 10g): Race-optimized layup for sub-100kg XC racers on groomed or low-impact terrain. Reduced impact tolerance compared to standard grade. Known Tradeoffs While the hookless construction saves weight and simplifies layup consistency, it caps maximum tire pressure at 65 psi and requires ETRTO-compliant tubeless tires. Riders requiring pressures above 65 psi or using clincher tires should select a hooked-bead carbon rim instead. Frequently Asked Questions Q: How light should a carbon 29er rim be for competitive XC racing? A: Most competitive XC rims weigh between 280–360g. This rim's ultralight grade at 300 ± 10g sits within that range, while the superlight grade (330g) offers a more durable race option. Q: Is a 28mm inner width good for tubeless mountain bike tires? A: Yes. ETRTO and most tire manufacturers recommend 25–30mm inner width for 2.1–2.4 inch MTB tires. At 28mm, this rim is well-positioned for XC and light trail use. Q: What is the difference between hookless and hooked carbon rims? A: Hooked rims have a retaining bead that supports higher pressure and is compatible with standard clincher tires. Hookless rims require tubeless-ready tires, limit pressure to 65 psi, and achieve slightly lower rim weight through a cleaner carbon layup. Q: Are hookless carbon rims safe for aggressive trail riding? A: This rim is rated for riders up to 100kg and supports compressive loads exceeding 300kg. It is suitable for XC and light trail use. For aggressive enduro or downhill terrain with high-impact forces, a taller-profile, heavier-layup rim is recommended. Q: Can spoke count and hole diameter be customized? A: Yes. Spoke hole diameter (standard 4.5mm), valve hole diameter (6.5mm), assembly hole (7.5mm), and nipple offset angles are all available in custom configurations. 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The 30mm inner width supports modern high-volume tyres (2.2–2.6 in) at pressures between 45 and 65 psi, while the 23mm profile keeps rotational weight low without sacrificing lateral stiffness. Available in three weight tiers: \u003cstrong\u003eStandard (380 ± 15 g)\u003c\/strong\u003e, \u003cstrong\u003eSuperlight (330 ± 10 g)\u003c\/strong\u003e, and \u003cstrong\u003eUltralight (300 ± 10 g)\u003c\/strong\u003e per rim.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Size\u003c\/td\u003e\n\u003ctd\u003e29er (700c compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape (hooked)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Height\u003c\/td\u003e\n\u003ctd\u003e23 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD (Effective Rim Diameter)\u003c\/td\u003e\n\u003ctd\u003e592 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight – Standard\u003c\/td\u003e\n\u003ctd\u003e380 ± 15 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight – Superlight\u003c\/td\u003e\n\u003ctd\u003e330 ± 10 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight – Ultralight\u003c\/td\u003e\n\u003ctd\u003e300 ± 10 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 300 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 280 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Imbalance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 3 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5 mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5 mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5 mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Angle\u003c\/td\u003e\n\u003ctd\u003eLeft 5° \/ Right 7° (asymmetric offset; customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin \/ Max Tyre Pressure\u003c\/td\u003e\n\u003ctd\u003e45 \/ 65 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eDesign Tradeoffs to Know Before You Buy\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e23mm rim height vs. deeper profiles:\u003c\/strong\u003e A shallower 23mm section reduces aerodynamic drag penalty in technical terrain and saves 30–60 g versus 30–35mm profiles. It is not optimised for road-style speed riding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30mm inner width:\u003c\/strong\u003e Supports tyres from approximately 2.2 to 2.6 in. Riders using tyres narrower than 2.1 in may experience reduced tyre-sidewall support.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsymmetric offset (left 5° \/ right 7°):\u003c\/strong\u003e Corrects spoke-tension imbalance on rear wheels driven by cassette offset, improving wheel trueness and fatigue life. Requires asymmetric-aware wheel building.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHooked bead (U-shape):\u003c\/strong\u003e Compatible with both clincher and tubeless-ready tyres. Not a hookless rim — standard clincher and tubeless tyres are fully supported.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 kg rider weight limit:\u003c\/strong\u003e Suits XC and trail riders. Heavier enduro or downhill riders should consider a higher-volume, reinforced rim model.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatible Riding Styles\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Country (XC) Racing:\u003c\/strong\u003e Ultralight tier (300 ± 10 g) delivers competitive weight savings for race-day builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrail \u0026amp; All-Mountain (AM):\u003c\/strong\u003e Standard or Superlight tier balances durability and weight across mixed terrain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBikepacking \/ Gravel 29er:\u003c\/strong\u003e 30mm inner width and 592mm ERD accommodate wide-volume tyres suited to loaded touring.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a 23mm high carbon rim strong enough for aggressive all-mountain riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, for riders under 100 kg. The rim tests at \u0026gt;300 kg forward compressive strength and \u0026gt;50 kg lateral torsion resistance. For sustained rock-garden impacts at heavier rider weights, a 25–30mm profile rim is recommended.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does this rim's weight compare to aluminium 29er rims?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA quality double-wall aluminium 29er rim typically weighs 450–550 g. The Ultralight tier of this rim (300 ± 10 g) saves approximately 150–250 g per rim — roughly 300–500 g per wheelset — which measurably reduces rotational inertia for climbing and acceleration.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat tyres fit a 30mm inner-width rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eETRTO guidelines recommend tyres of 2.2–2.6 in (57–66 mm) for a 30mm inner width. Narrower tyres may balloon; wider tyres may exceed bead-seat integrity at maximum pressure.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan this rim be built tubeless?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The hooked U-shape bead and 6.5mm valve hole are tubeless-ready when paired with a tubeless-compatible tyre, rim tape, and valve. Tubeless conversion kit sold separately.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs custom drilling or spoke count available?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Spoke hole diameter (default 4.5 mm), valve hole diameter (default 6.5 mm), assembly hole diameter (default 7.5 mm), and nipple angle are all customisable. Contact the manufacturer with build specifications.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29er offset ultralight carbon mtb bike rim 23mm high 30mm wide for cross-country or AM,Bola\",\n  \"description\": \"Asymmetric Carbon 29er MTB Rim — 23mm High \/ 30mm Inner Width This hooked asymmetric carbon rim is designed for 29-inch mountain bike wheels used in cross-country (XC) racing and all-mountain (AM) riding. The 30mm inner width supports modern high-volume tyres (2.2–2.6 in) at pressures between 45 and 65 psi, while the 23mm profile keeps rotational weight low without sacrificing lateral stiffness. Available in three weight tiers: Standard (380 ± 15 g) , Superlight (330 ± 10 g) , and Ultralight (300 ± 10 g) per rim. Key Specifications Specification Value Wheel Size 29er (700c compatible) Rim Shape U-shape (hooked) Rim Height 23 mm Outer Width 36 mm Inner Width 30 mm ERD (Effective Rim Diameter) 592 mm Weight – Standard 380 ± 15 g Weight – Superlight 330 ± 10 g Weight – Ultralight 300 ± 10 g Forward Compressive Strength \u0026gt; 300 kg Lateral Torsion Resistance \u0026gt; 50 kg Spoke Hole Tension \u0026gt; 280 kg Dynamic Imbalance \u0026lt; 3 g Flatness Tolerance \u0026lt; 0.15 mm Roundness Tolerance \u0026lt; 0.3 mm Valve Hole Diameter 6.5 mm (customisable) Spoke Hole Diameter 4.5 mm (customisable) Assembly Hole Diameter 7.5 mm (customisable) Nipple Angle Left 5° \/ Right 7° (asymmetric offset; customisable) Min \/ Max Tyre Pressure 45 \/ 65 psi Max Rider Weight 100 kg Design Tradeoffs to Know Before You Buy 23mm rim height vs. deeper profiles: A shallower 23mm section reduces aerodynamic drag penalty in technical terrain and saves 30–60 g versus 30–35mm profiles. It is not optimised for road-style speed riding. 30mm inner width: Supports tyres from approximately 2.2 to 2.6 in. Riders using tyres narrower than 2.1 in may experience reduced tyre-sidewall support. Asymmetric offset (left 5° \/ right 7°): Corrects spoke-tension imbalance on rear wheels driven by cassette offset, improving wheel trueness and fatigue life. Requires asymmetric-aware wheel building. Hooked bead (U-shape): Compatible with both clincher and tubeless-ready tyres. Not a hookless rim — standard clincher and tubeless tyres are fully supported. 100 kg rider weight limit: Suits XC and trail riders. Heavier enduro or downhill riders should consider a higher-volume, reinforced rim model. Compatible Riding Styles Cross-Country (XC) Racing: Ultralight tier (300 ± 10 g) delivers competitive weight savings for race-day builds. Trail \u0026amp; All-Mountain (AM): Standard or Superlight tier balances durability and weight across mixed terrain. Bikepacking \/ Gravel 29er: 30mm inner width and 592mm ERD accommodate wide-volume tyres suited to loaded touring. Frequently Asked Questions Is a 23mm high carbon rim strong enough for aggressive all-mountain riding? Yes, for riders under 100 kg. The rim tests at \u0026gt;300 kg forward compressive strength and \u0026gt;50 kg lateral torsion resistance. For sustained rock-garden impacts at heavier rider weights, a 25–30mm profile rim is recommended. How does this rim's weight compare to aluminium 29er rims? A quality double-wall aluminium 29er rim typically weighs 450–550 g. The Ultralight tier of this rim (300 ± 10 g) saves approximately 150–250 g per rim — roughly 300–500 g per wheelset — which measurably reduces rotational inertia for climbing and acceleration. What tyres fit a 30mm inner-width rim? ETRTO guidelines recommend tyres of 2.2–2.6 in (57–66 mm) for a 30mm inner width. Narrower tyres may balloon; wider tyres may exceed bead-seat integrity at maximum pressure. Can this rim be built tubeless? Yes. The hooked U-shape bead and 6.5mm valve hole are tubeless-ready when paired with a tubeless-compatible tyre, rim tape, and valve. Tubeless conversion kit sold separately. Is custom drilling or spoke count available? Yes. Spoke hole diameter (default 4.5 mm), valve hole diameter (default 6.5 mm), assembly hole diameter (default 7.5 mm), and nipple angle are all customisable. 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The 29mm inner width accommodates 2.3–2.6\" tires at recommended pressures of \u003cstrong\u003e45–65 psi\u003c\/strong\u003e, and the asymmetric (offset) spoke bed improves tension balance on the drive side by evening spoke angles across the wheel.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Diameter\u003c\/td\u003e\n\u003ctd\u003e29\" (622mm BSD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile (Height)\u003c\/td\u003e\n\u003ctd\u003e20mm (low profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e35mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e29mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e598mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Standard\u003c\/td\u003e\n\u003ctd\u003e370g ±15g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Superlight\u003c\/td\u003e\n\u003ctd\u003e325g ±10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape (hookless)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBead Type\u003c\/td\u003e\n\u003ctd\u003eHookless (tubeless only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction\u003c\/td\u003e\n\u003ctd\u003eLeft 5° \/ Right 7° (offset; customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e45 psi (min) – 65 psi (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eStructural Strength Testing Results\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion Resistance:\u003c\/strong\u003e \u0026gt;50kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium (imbalance):\u003c\/strong\u003e \u0026lt;3g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlatness Tolerance:\u003c\/strong\u003e \u0026lt;0.15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoundness Tolerance:\u003c\/strong\u003e \u0026lt;0.3mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRide Discipline Fit\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Country (XC):\u003c\/strong\u003e The superlight 325g option and low 20mm profile minimize rotational weight, reducing energy cost on climbs. Pairs well with 2.2–2.4\" XC tires at 50–65 psi.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-Mountain (AM):\u003c\/strong\u003e The 29mm inner width supports high-volume 2.4–2.6\" casings for better cornering stability and compliance on technical terrain. Recommended tire pressure: 45–52 psi.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHookless vs. Hooked Rim — Key Tradeoffs\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eHookless (this rim)\u003c\/th\u003e\n\u003cth\u003eHooked\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBead compatibility\u003c\/td\u003e\n\u003ctd\u003eTubeless-only tires (check tire manufacturer approval)\u003c\/td\u003e\n\u003ctd\u003eTubeless and clincher\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum tire pressure\u003c\/td\u003e\n\u003ctd\u003e65 psi (as specified)\u003c\/td\u003e\n\u003ctd\u003eTypically higher (varies)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim wall weight\u003c\/td\u003e\n\u003ctd\u003eLower (no bead hook machining)\u003c\/td\u003e\n\u003ctd\u003eHigher\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim structural integrity\u003c\/td\u003e\n\u003ctd\u003eRequires tubeless-rated tires for safe seating\u003c\/td\u003e\n\u003ctd\u003eCompatible with wider tire range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eNote: Hookless rims require tubeless-compatible tires. Always verify tire manufacturer's hookless approval before mounting. Maximum tire pressure is 65 psi; exceeding this risks bead failure.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eOffset (Asymmetric) Rim Design\u003c\/h2\u003e\u003cp\u003eThe spoke holes are laterally offset (Left 5° \/ Right 7°) rather than centered on the rim centerline. On a rear wheel, this reduces the tension differential between the drive-side and non-drive-side spokes, producing a more evenly tensioned, laterally stiffer wheel. This is particularly beneficial on 12-speed drivetrains where the cassette forces a steeper drive-side spoke angle.\u003c\/p\u003e\u003ch2\u003eWarranty \u0026amp; Quality\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3-year manufacturer warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Manufactured in China by a dedicated carbon rim production facility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e Hole diameters (valve, spoke, assembly) and nipple offset angles available as custom orders — contact seller before purchase\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Is a 29mm inner width carbon rim suitable for all-mountain riding with 2.4\" tires?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Yes. A 29mm inner width is well within the recommended range for 2.4\" MTB tires (ETRTO recommends an inner width 25–35% of the tire's nominal width). The wider bed improves tire casing support and cornering stability compared to a 25mm rim.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What tire pressure should I run on a hookless rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: This rim is rated for 45–65 psi. Most AM\/XC tubeless setups run 38–55 psi depending on rider weight and terrain. Do not exceed 65 psi on this hookless rim.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Can I use a tube with this hookless rim in an emergency?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Hookless rims are not designed for inner tubes. In a field emergency, some riders briefly use a tube at very low pressure to reach safety, but this is not manufacturer-approved and carries a risk of bead unseating.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: How does the offset spoke pattern help on a 29er rear wheel?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: The asymmetric hole position shifts the rim's spoke flange reference point, reducing the tension imbalance between drive and non-drive sides. This results in fewer broken spokes and improved lateral rigidity under load.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What is the difference between the standard (370g) and superlight (325g) versions?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: The superlight variant uses a refined carbon layup with tighter tolerances (±10g vs. ±15g), reducing weight by approximately 45g per rim (90g per wheelset). For weight-focused XC racing, the superlight option is recommended; for heavier AM use, the standard version offers a more conservative safety margin.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29\\\" extralight MTB hookless carbon tubeless offset rims 20mm low profile 29mm inner wide for XC or AM Bola\",\n  \"description\": \"29er Hookless Carbon Tubeless MTB Rim — 20mm Profile, 29mm Inner Width, Offset Design A hookless, tubeless-ready 29er carbon rim weighing 325–370g per piece , built for cross-country (XC) and all-mountain (AM) riding. The 29mm inner width accommodates 2.3–2.6\\\" tires at recommended pressures of 45–65 psi , and the asymmetric (offset) spoke bed improves tension balance on the drive side by evening spoke angles across the wheel. Key Specifications Specification Value Rim Diameter 29\\\" (622mm BSD) Rim Profile (Height) 20mm (low profile) Outer Width 35mm Inner Width 29mm ERD 598mm Weight — Standard 370g ±15g per rim Weight — Superlight 325g ±10g per rim Rim Shape U-shape (hookless) Bead Type Hookless (tubeless only) Valve Hole Diameter 6.5mm (customizable) Spoke Hole Diameter 4.5mm (customizable) Assembly Hole Diameter 7.5mm (customizable) Nipple Direction Left 5° \/ Right 7° (offset; customizable) Max Rider Weight 100kg Tire Pressure Range 45 psi (min) – 65 psi (max) Structural Strength Testing Results Forward Compressive Strength: \u0026gt;300kg Lateral Torsion Resistance: \u0026gt;50kg Spoke Hole Tension: \u0026gt;280kg Dynamic Equilibrium (imbalance): \u0026lt;3g Flatness Tolerance: \u0026lt;0.15mm Roundness Tolerance: \u0026lt;0.3mm Ride Discipline Fit Cross-Country (XC): The superlight 325g option and low 20mm profile minimize rotational weight, reducing energy cost on climbs. Pairs well with 2.2–2.4\\\" XC tires at 50–65 psi. All-Mountain (AM): The 29mm inner width supports high-volume 2.4–2.6\\\" casings for better cornering stability and compliance on technical terrain. Recommended tire pressure: 45–52 psi. Hookless vs. Hooked Rim — Key Tradeoffs Feature Hookless (this rim) Hooked Bead compatibility Tubeless-only tires (check tire manufacturer approval) Tubeless and clincher Maximum tire pressure 65 psi (as specified) Typically higher (varies) Rim wall weight Lower (no bead hook machining) Higher Rim structural integrity Requires tubeless-rated tires for safe seating Compatible with wider tire range Note: Hookless rims require tubeless-compatible tires. Always verify tire manufacturer's hookless approval before mounting. Maximum tire pressure is 65 psi; exceeding this risks bead failure. Offset (Asymmetric) Rim Design The spoke holes are laterally offset (Left 5° \/ Right 7°) rather than centered on the rim centerline. On a rear wheel, this reduces the tension differential between the drive-side and non-drive-side spokes, producing a more evenly tensioned, laterally stiffer wheel. This is particularly beneficial on 12-speed drivetrains where the cassette forces a steeper drive-side spoke angle. Warranty \u0026amp; Quality Warranty: 3-year manufacturer warranty Origin: Manufactured in China by a dedicated carbon rim production facility Customization: Hole diameters (valve, spoke, assembly) and nipple offset angles available as custom orders — contact seller before purchase Frequently Asked Questions Q: Is a 29mm inner width carbon rim suitable for all-mountain riding with 2.4\\\" tires? A: Yes. A 29mm inner width is well within the recommended range for 2.4\\\" MTB tires (ETRTO recommends an inner width 25–35% of the tire's nominal width). The wider bed improves tire casing support and cornering stability compared to a 25mm rim. Q: What tire pressure should I run on a hookless rim? A: This rim is rated for 45–65 psi. Most AM\/XC tubeless setups run 38–55 psi depending on rider weight and terrain. Do not exceed 65 psi on this hookless rim. Q: Can I use a tube with this hookless rim in an emergency? A: Hookless rims are not designed for inner tubes. In a field emergency, some riders briefly use a tube at very low pressure to reach safety, but this is not manufacturer-approved and carries a risk of bead unseating. Q: How does the offset spoke pattern help on a 29er rear wheel? A: The asymmetric hole position shifts the rim's spoke flange reference point, reducing the tension imbalance between drive and non-drive sides. This results in fewer broken spokes and improved lateral rigidity under load. Q: What is the difference between the standard (370g) and superlight (325g) versions? A: The superlight variant uses a refined carbon layup with tighter tolerances (±10g vs. ±15g), reducing weight by approximately 45g per rim (90g per wheelset). For weight-focused XC racing, the superlight option is recommended; for heavier AM use, the standard version offers a more conservative safety margin.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/MTB35-C20-29_8e1d2643-cb3c-4ac6-8403-7047732cd0f9.jpg?v=1714112112\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1_a1d02965-4e5e-4455-b5be-bfd036449988.png?v=1714112112\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/hookless_5f5ffd98-599b-4960-ab3f-a605a49bd206.jpg?v=1714112112\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/redbola_00ad45a5-534a-4e3b-9927-1183b29426a4.jpg?v=1714112112\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/whitebola_1ca9877b-01cb-4763-b234-68b789cda288.jpg?v=1714112112\",\n    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Available in two weight variants — \u003cstrong\u003eStandard (385 ± 15 g)\u003c\/strong\u003e and \u003cstrong\u003eSuperlight (325 ± 10 g)\u003c\/strong\u003e — it delivers competitive weight savings without sacrificing structural integrity.\u003c\/p\u003e\u003ch2\u003eWhy Asymmetric? The Performance Case\u003c\/h2\u003e\u003cp\u003eOn a standard rear wheel, spoke tension is unequal between the drive and non-drive sides due to hub flange offset. An asymmetric rim offsets the spoke bed laterally to reduce this tension differential, producing a more evenly tensioned, laterally stiffer, and longer-lasting wheel build. The result is measurably improved power transfer and reduced spoke fatigue — particularly relevant for AM riders running wide tires at lower pressures.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Size\u003c\/td\u003e\n\u003ctd\u003e29\" (29er)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile Height\u003c\/td\u003e\n\u003ctd\u003e23 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e32 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD (Effective Rim Diameter)\u003c\/td\u003e\n\u003ctd\u003e598 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Standard\u003c\/td\u003e\n\u003ctd\u003e385 ± 15 g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Superlight\u003c\/td\u003e\n\u003ctd\u003e325 ± 10 g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape (hookless)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTubeless Compatible\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 300 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 280 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Equilibrium (imbalance)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 3 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction\u003c\/td\u003e\n\u003ctd\u003eLeft 5° \/ Right 7° (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e45–65 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRiding Discipline Fit\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eXC Racing:\u003c\/strong\u003e The Superlight variant (325 ± 10 g) reduces rotational mass, improving acceleration and climbing efficiency on hardpack and mixed-terrain race courses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-Mountain (AM):\u003c\/strong\u003e The 32 mm inner width optimally supports 2.3\"–2.5\" tires at 45–65 psi, improving cornering stability and traction on technical descents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnduro (moderate):\u003c\/strong\u003e The \u0026gt; 300 kg compressive strength and \u0026lt; 0.15 mm flatness tolerance offer durability for riders up to 100 kg on mixed-terrain terrain.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHookless Tubeless: Tradeoffs to Know\u003c\/h2\u003e\u003cp\u003eHookless rims offer a lighter and more uniform bead shelf compared to hooked designs, and are fully tubeless-compatible. However, they require tubeless-rated tires and must be operated within the specified 45–65 psi range. High-pressure tube setups are not recommended. All major tire brands (Maxxis, Schwalbe, Continental) offer 29er tubeless options compatible with a 32 mm inner width hookless rim.\u003c\/p\u003e\u003ch2\u003eCustomization Options\u003c\/h2\u003e\u003cp\u003eAs a direct manufacturer with over a decade of supply experience to European and North American cycling brands, Bola offers customizable hole diameters, nipple angles, spoke counts, and OEM\/private-label finishing. Contact us for minimum order quantities and lead times.\u003c\/p\u003e\u003ch2\u003eWarranty\u003c\/h2\u003e\u003cp\u003eThree-year manufacturer warranty covering structural defects under normal riding conditions.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Are hookless carbon rims safe for trail and all-mountain riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Yes, provided you use tubeless-rated tires and stay within the 45–65 psi range specified for this rim. Hookless bead shelves have been validated by major OEMs including Canyon, Trek, and Specialized on trail and AM builds. The \u0026gt; 300 kg compressive strength rating confirms structural suitability for off-road impact loads.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What tire width range works best with a 32 mm inner width?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: ETRTO guidelines recommend a tire width 1.8×–2.5× the inner rim width. For 32 mm inner width, optimal tire widths are 2.3\"–2.5\" (58–63 mm), though 2.1\"–2.6\" fitments are commonly used in XC and AM applications.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What is the weight difference between the Standard and Superlight variants?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: The Standard rim weighs 385 ± 15 g per rim; the Superlight version weighs 325 ± 10 g — a saving of approximately 60 g per rim (120 g per wheelset), which is meaningful for competitive XC racing.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Can I run tubes in a hookless rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: It is not recommended. Hookless rims are designed for tubeless-only use. Running inner tubes in a hookless bead profile can lead to bead unseating under pressure.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Is the asymmetric design only for rear wheels?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Asymmetric rims provide the greatest benefit on the rear wheel where drive-side spoke tension disparity is largest. Some builders use them on the front as well for consistency; both applications are structurally valid.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Asymmetric 29\\\" feather light MTB hookless carbon tubeless rims 23mm profile 32mm inner wide XC or AM Bola\",\n  \"description\": \"29\\\" Asymmetric Hookless Tubeless Carbon MTB Rim — 23mm Profile, 32mm Inner Width The Bola 29er asymmetric carbon MTB rim is engineered for cross-country (XC) and all-mountain (AM) riders who need a tubeless-ready hookless rim that is measurably lighter and structurally more balanced than conventional symmetrical designs. Available in two weight variants — Standard (385 ± 15 g) and Superlight (325 ± 10 g) — it delivers competitive weight savings without sacrificing structural integrity. Why Asymmetric? The Performance Case On a standard rear wheel, spoke tension is unequal between the drive and non-drive sides due to hub flange offset. An asymmetric rim offsets the spoke bed laterally to reduce this tension differential, producing a more evenly tensioned, laterally stiffer, and longer-lasting wheel build. The result is measurably improved power transfer and reduced spoke fatigue — particularly relevant for AM riders running wide tires at lower pressures. Key Specifications Specification Value Wheel Size 29\\\" (29er) Rim Profile Height 23 mm Inner Width 32 mm Outer Width 38 mm ERD (Effective Rim Diameter) 598 mm Weight — Standard 385 ± 15 g per rim Weight — Superlight 325 ± 10 g per rim Rim Shape U-shape (hookless) Tubeless Compatible Yes Forward Compressive Strength \u0026gt; 300 kg Lateral Torsion Resistance \u0026gt; 50 kg Spoke Hole Tension \u0026gt; 280 kg Dynamic Equilibrium (imbalance) \u0026lt; 3 g Flatness Tolerance \u0026lt; 0.15 mm Roundness Tolerance \u0026lt; 0.3 mm Spoke Hole Diameter 4.5 mm (customizable) Valve Hole Diameter 6.5 mm (customizable) Assembly Hole Diameter 7.5 mm (customizable) Nipple Direction Left 5° \/ Right 7° (customizable) Tire Pressure Range 45–65 psi Max Rider Weight 100 kg Riding Discipline Fit XC Racing: The Superlight variant (325 ± 10 g) reduces rotational mass, improving acceleration and climbing efficiency on hardpack and mixed-terrain race courses. All-Mountain (AM): The 32 mm inner width optimally supports 2.3\\\"–2.5\\\" tires at 45–65 psi, improving cornering stability and traction on technical descents. Enduro (moderate): The \u0026gt; 300 kg compressive strength and \u0026lt; 0.15 mm flatness tolerance offer durability for riders up to 100 kg on mixed-terrain terrain. Hookless Tubeless: Tradeoffs to Know Hookless rims offer a lighter and more uniform bead shelf compared to hooked designs, and are fully tubeless-compatible. However, they require tubeless-rated tires and must be operated within the specified 45–65 psi range. High-pressure tube setups are not recommended. All major tire brands (Maxxis, Schwalbe, Continental) offer 29er tubeless options compatible with a 32 mm inner width hookless rim. Customization Options As a direct manufacturer with over a decade of supply experience to European and North American cycling brands, Bola offers customizable hole diameters, nipple angles, spoke counts, and OEM\/private-label finishing. Contact us for minimum order quantities and lead times. Warranty Three-year manufacturer warranty covering structural defects under normal riding conditions. Frequently Asked Questions Q: Are hookless carbon rims safe for trail and all-mountain riding? A: Yes, provided you use tubeless-rated tires and stay within the 45–65 psi range specified for this rim. Hookless bead shelves have been validated by major OEMs including Canyon, Trek, and Specialized on trail and AM builds. The \u0026gt; 300 kg compressive strength rating confirms structural suitability for off-road impact loads. Q: What tire width range works best with a 32 mm inner width? A: ETRTO guidelines recommend a tire width 1.8×–2.5× the inner rim width. For 32 mm inner width, optimal tire widths are 2.3\\\"–2.5\\\" (58–63 mm), though 2.1\\\"–2.6\\\" fitments are commonly used in XC and AM applications. Q: What is the weight difference between the Standard and Superlight variants? A: The Standard rim weighs 385 ± 15 g per rim; the Superlight version weighs 325 ± 10 g — a saving of approximately 60 g per rim (120 g per wheelset), which is meaningful for competitive XC racing. Q: Can I run tubes in a hookless rim? A: It is not recommended. Hookless rims are designed for tubeless-only use. Running inner tubes in a hookless bead profile can lead to bead unseating under pressure. Q: Is the asymmetric design only for rear wheels? A: Asymmetric rims provide the greatest benefit on the rear wheel where drive-side spoke tension disparity is largest. 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Available in two weight options — \u003cstrong\u003eStandard (355 ± 10 g)\u003c\/strong\u003e and \u003cstrong\u003eSuperlight (295 ± 10 g)\u003c\/strong\u003e — it delivers a measurable weight advantage over comparable alloy rims (typically 450–550 g) without sacrificing structural integrity. Maximum rider weight: 100 kg. Recommended tire pressure: 45–65 psi.\u003c\/p\u003e\u003ch2\u003eCore Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Size\u003c\/td\u003e\n\u003ctd\u003e29er (622mm BSD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eU-Shape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Height\u003c\/td\u003e\n\u003ctd\u003e23 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e28 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e23 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e589 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Standard\u003c\/td\u003e\n\u003ctd\u003e355 ± 10 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Superlight\u003c\/td\u003e\n\u003ctd\u003e295 ± 10 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 300 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 280 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Equilibrium\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 3 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Angle\u003c\/td\u003e\n\u003ctd\u003eLeft 5° \/ Right 7° (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin \/ Max Tire Pressure\u003c\/td\u003e\n\u003ctd\u003e45 \/ 65 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003ePerformance by Riding Discipline\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCyclocross:\u003c\/strong\u003e The low 23 mm rim height reduces wind resistance during technical, high-cadence course sections. The U-shape profile provides predictable tire seating for rapid pressure changes between mud and hardpack surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-Mountain (AM):\u003c\/strong\u003e A 23 mm inner width supports trail tires from 2.2″ to 2.6″, optimizing casing spread for improved cornering contact patch and reduced pinch-flat risk at lower pressures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall \u0026amp; Medium Cycling Brands \/ OEM:\u003c\/strong\u003e Custom hole diameters, nipple angles, spoke counts, and finish options available. Contact us for MOQ and lead-time details.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWeight Tradeoff: Standard vs. Superlight\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eSuperlight variant (295 ± 10 g)\u003c\/strong\u003e offers a 60 g reduction per rim — approximately 120 g per wheelset — which is measurable in timed climbs and acceleration. The \u003cstrong\u003eStandard variant (355 ± 10 g)\u003c\/strong\u003e is the recommended choice for riders prioritizing long-term durability under sustained loads or frequent impacts, without a significant performance penalty.\u003c\/p\u003e\u003ch2\u003eWarranty \u0026amp; Quality Assurance\u003c\/h2\u003e\u003cp\u003eEvery rim is backed by a \u003cstrong\u003e3-year manufacturer warranty\u003c\/strong\u003e. Produced by a carbon fiber rim specialist with over a decade of supply experience to professional cycling teams and brands across Europe and North America.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the best lightweight carbon 29er MTB rim for cyclocross?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThis rim's 23 mm height minimizes aerodynamic drag in variable cyclocross conditions, while the Superlight option at 295 g delivers one of the lowest weight-per-strength ratios in this rim class. The U-shape profile ensures consistent tubeless or clincher tire seating across surface transitions.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a sub-300 g carbon 29er rim worth it?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAt 295 ± 10 g (Superlight), the weight saving versus the Standard (355 ± 10 g) is 60 g per rim. For competitive XC or cyclocross riders where rotational weight directly affects acceleration, this is a meaningful gain. For AM riders prioritizing impact resilience, the Standard variant offers the better durability-to-weight balance.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat inner rim width is best for 29er trail or all-mountain riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA 23 mm inner width is compatible with 2.2″–2.6″ tires, the most common range for trail and AM riding. This width optimizes tire casing spread, improving cornering traction and lowering the effective minimum pressure before pinch-flat risk increases.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCarbon vs. alloy 29er rims for cyclocross — which is better for the price?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eCarbon rims in this category typically weigh 295–380 g versus 450–550 g for quality alloy equivalents. The weight and stiffness advantages favor carbon for competitive use. This rim is manufactured at scale with direct OEM pricing, closing the traditional carbon-to-alloy cost gap for brands and team buyers.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat specs should I look for in a 29er carbon rim for all-mountain riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eKey specs for AM use: inner width ≥ 23 mm for tire support, spoke hole tension tolerance \u0026gt; 250 kg for build durability, dynamic equilibrium \u0026lt; 3 g for smooth high-speed rolling, and flatness tolerance \u0026lt; 0.2 mm for consistent brake track performance. This rim meets or exceeds all four thresholds.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29er lightweight carbon mtb rim 23mm high 23mm wide for cyclocross or AM bola\",\n  \"description\": \"29er Carbon MTB Rim — 23mm Inner Width, U-Shape Profile A 23mm inner width, U-shape carbon rim engineered for 29-inch cyclocross and all-mountain (AM) riding. Available in two weight options — Standard (355 ± 10 g) and Superlight (295 ± 10 g) — it delivers a measurable weight advantage over comparable alloy rims (typically 450–550 g) without sacrificing structural integrity. Maximum rider weight: 100 kg. Recommended tire pressure: 45–65 psi. Core Specifications Specification Value Wheel Size 29er (622mm BSD) Rim Profile U-Shape Rim Height 23 mm Outer Width 28 mm Inner Width 23 mm ERD 589 mm Weight — Standard 355 ± 10 g Weight — Superlight 295 ± 10 g Forward Compressive Strength \u0026gt; 300 kg Lateral Torsion \u0026gt; 50 kg Spoke Hole Tension \u0026gt; 280 kg Dynamic Equilibrium \u0026lt; 3 g Flatness Tolerance \u0026lt; 0.15 mm Roundness Tolerance \u0026lt; 0.3 mm Assembly Hole Diameter 7.5 mm (customizable) Valve Hole Diameter 6.5 mm (customizable) Spoke Hole Diameter 4.5 mm (customizable) Nipple Angle Left 5° \/ Right 7° (customizable) Min \/ Max Tire Pressure 45 \/ 65 psi Max Rider Weight 100 kg Performance by Riding Discipline Cyclocross: The low 23 mm rim height reduces wind resistance during technical, high-cadence course sections. The U-shape profile provides predictable tire seating for rapid pressure changes between mud and hardpack surfaces. All-Mountain (AM): A 23 mm inner width supports trail tires from 2.2″ to 2.6″, optimizing casing spread for improved cornering contact patch and reduced pinch-flat risk at lower pressures. Small \u0026 Medium Cycling Brands \/ OEM: Custom hole diameters, nipple angles, spoke counts, and finish options available. Contact us for MOQ and lead-time details. Weight Tradeoff: Standard vs. Superlight The Superlight variant (295 ± 10 g) offers a 60 g reduction per rim — approximately 120 g per wheelset — which is measurable in timed climbs and acceleration. The Standard variant (355 ± 10 g) is the recommended choice for riders prioritizing long-term durability under sustained loads or frequent impacts, without a significant performance penalty. Warranty \u0026 Quality Assurance Every rim is backed by a 3-year manufacturer warranty . Produced by a carbon fiber rim specialist with over a decade of supply experience to professional cycling teams and brands across Europe and North America. Frequently Asked Questions What is the best lightweight carbon 29er MTB rim for cyclocross? This rim's 23 mm height minimizes aerodynamic drag in variable cyclocross conditions, while the Superlight option at 295 g delivers one of the lowest weight-per-strength ratios in this rim class. The U-shape profile ensures consistent tubeless or clincher tire seating across surface transitions. Is a sub-300 g carbon 29er rim worth it? At 295 ± 10 g (Superlight), the weight saving versus the Standard (355 ± 10 g) is 60 g per rim. For competitive XC or cyclocross riders where rotational weight directly affects acceleration, this is a meaningful gain. For AM riders prioritizing impact resilience, the Standard variant offers the better durability-to-weight balance. What inner rim width is best for 29er trail or all-mountain riding? A 23 mm inner width is compatible with 2.2″–2.6″ tires, the most common range for trail and AM riding. This width optimizes tire casing spread, improving cornering traction and lowering the effective minimum pressure before pinch-flat risk increases. Carbon vs. alloy 29er rims for cyclocross — which is better for the price? Carbon rims in this category typically weigh 295–380 g versus 450–550 g for quality alloy equivalents. The weight and stiffness advantages favor carbon for competitive use. This rim is manufactured at scale with direct OEM pricing, closing the traditional carbon-to-alloy cost gap for brands and team buyers. What specs should I look for in a 29er carbon rim for all-mountain riding? Key specs for AM use: inner width ≥ 23 mm for tire support, spoke hole tension tolerance \u0026gt; 250 kg for build durability, dynamic equilibrium \u0026lt; 3 g for smooth high-speed rolling, and flatness tolerance \u0026lt; 0.2 mm for consistent brake track performance. 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At 285–345g per rim (depending on build), it suits riders up to 100kg who demand precise handling without unnecessary rotational mass. The 23mm inner width accommodates 2.2\"–2.5\" tubeless tires within ETRTO-recommended fitment ranges for hookless rims.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Diameter\u003c\/td\u003e\n\u003ctd\u003e27.5\" (584mm BSD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile (Height)\u003c\/td\u003e\n\u003ctd\u003e23mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e28mm outer \/ 23mm inner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e554mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Standard)\u003c\/td\u003e\n\u003ctd\u003e345 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Superlight)\u003c\/td\u003e\n\u003ctd\u003e285 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape (hookless tubeless)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction\u003c\/td\u003e\n\u003ctd\u003eLeft 5° \/ Right 7° (or custom)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e45–65 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eStructural Testing Data\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion Resistance:\u003c\/strong\u003e \u0026gt;50kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium (Imbalance):\u003c\/strong\u003e \u0026lt;3g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlatness Tolerance:\u003c\/strong\u003e \u0026lt;0.15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoundness Tolerance:\u003c\/strong\u003e \u0026lt;0.3mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Asymmetric Rim Design?\u003c\/h2\u003e\n\u003cp\u003eAsymmetric spoke drilling offsets the spoke bed toward the non-drive side, equalizing spoke tension between left and right spokes. This reduces the tension imbalance common in standard symmetric rims — particularly relevant on rear wheels where driveside dish significantly misaligns the hub flange geometry. The result is a more evenly stressed, laterally stiffer wheel with reduced risk of spoke fatigue over time.\u003c\/p\u003e\n\u003ch2\u003eHookless Tubeless: Use-Case Suitability\u003c\/h2\u003e\n\u003cp\u003eHookless rims are compatible exclusively with tubeless-ready tires marked as hookless-safe by their manufacturer. At a maximum pressure of 65 psi, this rim is well-suited to XC racing and trail\/all-mountain use where tires are typically run at 25–50 psi. \u003cem\u003eNote: hookless rims are not recommended for use with tubed tires or with tires not certified for hookless fitment.\u003c\/em\u003e Always verify tire compatibility before mounting.\u003c\/p\u003e\n\u003ch2\u003e23mm Inner Width: What Tire Widths Does It Support?\u003c\/h2\u003e\n\u003cp\u003eA 23mm inner width is optimized for 2.2\"–2.5\" MTB tires. Per ETRTO guidelines, this inner width produces a measured tire width approximately 4–6mm wider than the rim's inner dimension, giving optimal casing support and cornering stability for trail and XC disciplines. Riders requiring wider tire profiles (\u0026gt;2.6\") for enduro or downhill should consider a wider rim platform.\u003c\/p\u003e\n\u003ch2\u003eCustomization Options\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHole drilling diameter (spoke, valve, assembly)\u003c\/li\u003e\n\u003cli\u003eNipple offset angle\u003c\/li\u003e\n\u003cli\u003eSuperlight or standard layup (285g vs. 345g)\u003c\/li\u003e\n\u003cli\u003eCompatible with custom branding for OEM and team orders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eAre hookless carbon rims safe for aggressive trail riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, within the rated pressure range (45–65 psi) and with hookless-compatible tires. The tested forward compressive strength exceeds 300kg and spoke hole tension exceeds 280kg, making this rim structurally suitable for trail and all-mountain use. It is not rated for downhill or bike park applications.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a 23mm inner width sufficient for all-mountain riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFor most all-mountain use, yes. A 23mm inner width pairs well with 2.3\"–2.4\" tires that are standard for trail and all-mountain builds. Riders seeking maximum volume for enduro terrain may prefer a 25–27mm inner width rim.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the advantage of asymmetric drilling on this rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAsymmetric spoke bed placement equalizes spoke tension across both sides of the wheel. This improves lateral stiffness and reduces the risk of spoke fatigue — a measurable engineering benefit backed by wheel-building data, particularly on rear wheels with significant dish.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the weight difference between standard and superlight builds?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe standard layup weighs 345 ± 10g per rim; the superlight variant weighs 285 ± 10g per rim — a 60g per rim saving. For a wheelset, this equates to approximately 120g reduction in rotating mass, which is meaningful for XC racing.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan this rim be used for OEM or team orders?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Bola supports customized hole diameters, nipple angles, and branding for small-to-medium cycling brands and professional teams. Contact us directly for MOQ and lead time details.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 28\/28 \/ Normal","offer_id":48092904358142,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 28\/28 \/ Super Light","offer_id":48092904390910,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Normal","offer_id":48092904423678,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Super Light","offer_id":48092904456446,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Normal","offer_id":48092904489214,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Super Light","offer_id":48092904521982,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Normal","offer_id":48092904554750,"sku":null,"price":290.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Super Light","offer_id":48092904587518,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Normal","offer_id":48092904620286,"sku":null,"price":290.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Super Light","offer_id":48092904653054,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Normal","offer_id":48092904685822,"sku":null,"price":290.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Super Light","offer_id":48092904718590,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Normal","offer_id":48092904751358,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Super Light","offer_id":48092904784126,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Normal","offer_id":48092904816894,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Super Light","offer_id":48092904849662,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Normal","offer_id":48092904882430,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Super Light","offer_id":48092904915198,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Normal","offer_id":48092904947966,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Super Light","offer_id":48092904980734,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Normal","offer_id":48092905013502,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Super Light","offer_id":48092905046270,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Normal","offer_id":48092905079038,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Super Light","offer_id":48092905111806,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/mtb_rims.png?v=1780298344"},{"product_id":"29er-carbon-mtb-rim-30mm-profile-25mm-inner-for-xc-am","title":"29er Carbon MTB Rim – 30mm Profile, 25mm Inner for XC\/AM","description":"\u003ch2\u003e29er Carbon MTB Rim – 30mm Height, 25mm Inner Width\u003cbr\u003eFor All-Mountain \u0026amp; XC Performance\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e This carbon fiber 29-inch MTB rim features a 30mm height and 25mm inner width engineered for competitive cross-country and all-mountain use. Choose between Standard (385 ± 15g) or Superlight (325 ± 10g) builds. Rim is U-shape, hookless, and tubeless-ready, supporting tire widths from 2.2\" to 2.4\". Primed for stiffness, durability, and weight efficiency.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWheel Size\u003c\/td\u003e\n\u003ctd\u003e29 inch (29er)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eU-Shape, Hookless\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRim Height\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight (Standard)\u003c\/td\u003e\n\u003ctd\u003e385 ± 15 g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight (Superlight)\u003c\/td\u003e\n\u003ctd\u003e325 ± 10 g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e579 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMax Spoke Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;280 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTubeless Compatible\u003c\/td\u003e\n\u003ctd\u003eYes (45–65 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eValve Compatibility\u003c\/td\u003e\n\u003ctd\u003eSchrader\/Presta (6.5 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRecommended Tire Width\u003c\/td\u003e\n\u003ctd\u003e2.2–2.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTesting\u003c\/td\u003e\n\u003ctd\u003eForward Compressive Strength: \u0026gt;300 kg\u003cbr\u003eLateral Torsion: \u0026gt;50 kg\u003cbr\u003eFlatness Tolerance: \u0026lt;0.15 mm (CNC verified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eComparison: 30mm vs 35mm Rim Height for MTB XC\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e30mm:\u003c\/strong\u003e Balances aerodynamic profile and climbing efficiency.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e35mm:\u003c\/strong\u003e Offers improved high-speed aero but may slightly increase weight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdl\u003e\n  \u003cdt\u003eIs a 25mm inner width carbon rim suitable for both trail and XC use?\u003c\/dt\u003e\n  \u003cdd\u003eYes. 25mm inner width provides an ideal balance of traction, tire stability, and compatibility with 2.2\"–2.4\" MTB tires for modern cross-country and light all-mountain applications.\u003cbr\u003e\n\u003c\/dd\u003e\n  \u003cdt\u003eWhat is the advantage of Superlight vs Standard weight versions?\u003c\/dt\u003e\n  \u003cdd\u003eSuperlight (325g) reduces rotating mass for acceleration in competitive XC but has a slightly lower absolute impact resistance than Standard (385g). Select based on race priority versus aggressive trail use.\u003c\/dd\u003e\n  \u003cdt\u003eWhat certifications or test results support performance claims?\u003c\/dt\u003e\n  \u003cdd\u003eThis rim undergoes in-house load tests: \u0026gt;300kg forward compressive strength, \u0026gt;50kg lateral torsion, and spoke tension over 280kg. Flatness tolerance within 0.15mm confirms manufacturing precision. All data available upon request.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch3\u003eIntended User \u0026amp; Warranty\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for small\/medium cycling brands, professional racing teams, and cyclists seeking lightweight, durable, high-performance carbon MTB rims.\u003c\/li\u003e\n  \u003cli\u003e3-year warranty against manufacturing defects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29er Carbon MTB Rim 30mm Height 25mm Inner Width – All Mountain \u0026 XC\",\n  \"description\": \"29er Carbon MTB Rim – 30mm Height, 25mm Inner Width For All-Mountain \u0026 XC Performance Answer: This carbon fiber 29-inch MTB rim features a 30mm height and 25mm inner width engineered for competitive cross-country and all-mountain use. Choose between Standard (385 ± 15g) or Superlight (325 ± 10g) builds. Rim is U-shape, hookless, and tubeless-ready, supporting tire widths from 2.2\\\" to 2.4\\\". Primed for stiffness, durability, and weight efficiency. Key Specifications Specification Value Wheel Size 29 inch (29er) Rim Profile U-Shape, Hookless Rim Height 30 mm Outer Width 30 mm Inner Width 25 mm Weight (Standard) 385 ± 15 g Weight (Superlight) 325 ± 10 g ERD 579 mm Max Spoke Tension \u0026gt;280 kg Tubeless Compatible Yes (45–65 psi) Valve Compatibility Schrader\/Presta (6.5 mm) Recommended Tire Width 2.2–2.4 in Testing Forward Compressive Strength: \u0026gt;300 kg Lateral Torsion: \u0026gt;50 kg Flatness Tolerance: \u0026lt;0.15 mm (CNC verified) Comparison: 30mm vs 35mm Rim Height for MTB XC 30mm: Balances aerodynamic profile and climbing efficiency. 35mm: Offers improved high-speed aero but may slightly increase weight. Frequently Asked Questions Is a 25mm inner width carbon rim suitable for both trail and XC use? Yes. 25mm inner width provides an ideal balance of traction, tire stability, and compatibility with 2.2\\\"–2.4\\\" MTB tires for modern cross-country and light all-mountain applications. What is the advantage of Superlight vs Standard weight versions? Superlight (325g) reduces rotating mass for acceleration in competitive XC but has a slightly lower absolute impact resistance than Standard (385g). Select based on race priority versus aggressive trail use. What certifications or test results support performance claims? This rim undergoes in-house load tests: \u0026gt;300kg forward compressive strength, \u0026gt;50kg lateral torsion, and spoke tension over 280kg. Flatness tolerance within 0.15mm confirms manufacturing precision. All data available upon request. 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Two weight options (385g standard, 325g superlight) offer flexibility for racers and technical riders alike.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Technical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-modulus Toray-grade carbon fiber (unidirectional + woven layup)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Size:\u003c\/strong\u003e 29\" (ISO 622)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e Asymmetric, U-shape; 30mm height, 25mm inner \/ 30mm outer width\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Standard – 385 ± 15g; Superlight – 325 ± 10g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Tire Width:\u003c\/strong\u003e 2.2–2.5\" for optimal performance; ETRTO compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength \u0026amp; Tolerance:\u003c\/strong\u003e Forward compressive \u0026gt;300kg, lateral torsion \u0026gt;50kg, spoke hole tension \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Individually weighed; flatness \u0026lt;0.15mm; roundness \u0026lt;0.18mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless Ready:\u003c\/strong\u003e Compatible with tubeless and standard clincher tire setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3 years, covers manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison: 30mm vs. Deeper MTB Rims\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003e30mm Rim\u003c\/th\u003e\n\u003cth\u003e40mm+ Rim\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Stiffness\u003c\/td\u003e\n\u003ctd\u003eHigh, for precise tracking\u003c\/td\u003e\n\u003ctd\u003eVery high, increased harshness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAero Drag (XC\/Trail)\u003c\/td\u003e\n\u003ctd\u003eMinimal penalty\u003c\/td\u003e\n\u003ctd\u003eMarginal increase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpact Resistance\u003c\/td\u003e\n\u003ctd\u003eBalanced\u003c\/td\u003e\n\u003ctd\u003ePotentially less compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSituational Relevance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eXC and all-mountain riders seeking weight savings without sacrificing stability\u003c\/li\u003e\n\u003cli\u003eCustom wheel-builders for performance brands and racing teams\u003c\/li\u003e\n\u003cli\u003eProfessional and enthusiast cyclists requiring verified quality and consistent tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the best 29er carbon rims for XC and all mountain under 400g?\u003c\/strong\u003e\u003cbr\u003eA: Rims like the Bola 29er (325–385g) balance low weight, lateral stiffness, and impact-tested build for XC\/all-mountain racing while retaining tubeless compatibility and an asymmetric profile for balanced spoke tension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is a 25mm inner width carbon rim good for trail and all mountain MTB tires?\u003c\/strong\u003e\u003cbr\u003eA: Yes, a 25mm inner width supports 2.2–2.5\" tires, offering a stable platform compatible with ETRTO standards, ideal for trail, XC, and all-mountain riding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are asymmetric carbon rims worth it for 29er builds?\u003c\/strong\u003e\u003cbr\u003eA: Asymmetric rims improve spoke angle balance, enhancing lateral stiffness and reducing stress on the wheel system—advantages confirmed by builder and team experience.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does a 30mm high rim compare to deeper mountain bike rims?\u003c\/strong\u003e\u003cbr\u003eA: A 30mm profile yields strong lateral stiffness with manageable weight and negligible aerodynamic drag, compared to deeper, heavier rims that may be stiffer but less compliant for technical MTB applications.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29er Carbon MTB Rim 30mm Height 25mm Inner Width – XC \u0026 All Mountain Asymmetric | Bola\",\n  \"description\": \"29er Asymmetric Carbon MTB Rim – 30mm Height, 25mm Inner Width Lead Answer: This 29er carbon mountain bike rim features an asymmetric U-shape design with a 30mm profile and 25mm inner width, optimizing for XC and all-mountain use. 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Key Features \u0026 Technical Specifications Material: High-modulus Toray-grade carbon fiber (unidirectional + woven layup) Rim Size: 29\\\" (ISO 622) Profile: Asymmetric, U-shape; 30mm height, 25mm inner \/ 30mm outer width Weight: Standard – 385 ± 15g; Superlight – 325 ± 10g Recommended Tire Width: 2.2–2.5\\\" for optimal performance; ETRTO compatible Strength \u0026 Tolerance: Forward compressive \u003e300kg, lateral torsion \u003e50kg, spoke hole tension \u003e280kg Manufacturing: Individually weighed; flatness Tubeless Ready: Compatible with tubeless and standard clincher tire setups Warranty: 3 years, covers manufacturing defects Comparison: 30mm vs. Deeper MTB Rims Spec 30mm Rim 40mm+ Rim Lateral Stiffness High, for precise tracking Very high, increased harshness Aero Drag (XC\/Trail) Minimal penalty Marginal increase Impact Resistance Balanced Potentially less compliant Situational Relevance XC and all-mountain riders seeking weight savings without sacrificing stability Custom wheel-builders for performance brands and racing teams Professional and enthusiast cyclists requiring verified quality and consistent tolerances Frequently Asked Questions Q: What are the best 29er carbon rims for XC and all mountain under 400g? A: Rims like the Bola 29er (325–385g) balance low weight, lateral stiffness, and impact-tested build for XC\/all-mountain racing while retaining tubeless compatibility and an asymmetric profile for balanced spoke tension. Q: Is a 25mm inner width carbon rim good for trail and all mountain MTB tires? A: Yes, a 25mm inner width supports 2.2–2.5\\\" tires, offering a stable platform compatible with ETRTO standards, ideal for trail, XC, and all-mountain riding. Q: Are asymmetric carbon rims worth it for 29er builds? A: Asymmetric rims improve spoke angle balance, enhancing lateral stiffness and reducing stress on the wheel system—advantages confirmed by builder and team experience. Q: How does a 30mm high rim compare to deeper mountain bike rims? 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The offset spoke bed balances spoke tension, enhances lateral stiffness, and extends wheel life for competitive riding. Superlight variant weighs 380 ± 10g; standard variant 450 ± 15g. OEM customization and a 3-year warranty included.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Size:\u003c\/strong\u003e 29er (622 mm BSD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Height:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Width:\u003c\/strong\u003e 27mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Width:\u003c\/strong\u003e 33mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Holes:\u003c\/strong\u003e 28–32, offset for tension balance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Rim Diameter (ERD):\u003c\/strong\u003e 579mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-modulus Toray-grade carbon fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Shape:\u003c\/strong\u003e U-shaped, hookless tubeless compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Spoke Tension:\u003c\/strong\u003e \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight Tolerance:\u003c\/strong\u003e Superlight: 380 ± 10g | Standard: 450 ± 15g\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComparison Table: Similar Carbon 29er MTB Rims\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eRim\u003c\/th\u003e\n\u003cth\u003eInner Width\u003c\/th\u003e\n\u003cth\u003eProfile Height\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eUse-Case\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThis Product\u003c\/td\u003e\n\u003ctd\u003e27mm\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e380g \/ 450g\u003c\/td\u003e\n\u003ctd\u003eXC \/ Trail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompetitor XC930X-28\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e28mm\u003c\/td\u003e\n\u003ctd\u003e370g\u003c\/td\u003e\n\u003ctd\u003eXC Race\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompetitor XC927X-25\u003c\/td\u003e\n\u003ctd\u003e27mm\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e365g\u003c\/td\u003e\n\u003ctd\u003eXC \/ Trail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat are the benefits of asymmetric carbon rims?\u003c\/strong\u003e\u003cbr\u003eAsymmetric rims enable more even spoke tension, which improves wheel strength and longevity compared to traditional designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs 27mm inner width suitable for trail and all-mountain use?\u003c\/strong\u003e\u003cbr\u003eYes, 27mm internal width supports modern tire sizes for a balance of grip, rolling speed, and stability suited for XC and trail riding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does 30mm profile height affect performance?\u003c\/strong\u003e\u003cbr\u003e30mm profile provides an optimal blend of lateral stiffness and compliance, not overly deep—ideal for mixed terrain without excess weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes this rim support tubeless tires?\u003c\/strong\u003e\u003cbr\u003eYes, hookless rim shape is fully compatible with tubeless setups, allowing lower pressures and improved puncture resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat’s included with purchase?\u003c\/strong\u003e\u003cbr\u003eEach rim comes with a 3-year manufacturer warranty and OEM customization options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29er Asymmetric Carbon MTB Rim | 30mm Profile, 27mm Inner Width | XC \u0026 Trail | 380g Superlight\",\n  \"description\": \"Overview: Asymmetric 29\\\" Carbon MTB Rim for XC and Trail This 29-inch asymmetric carbon mountain bike rim features a 30mm profile and 27mm internal width—engineered for cross-country (XC) and all-mountain performance. The offset spoke bed balances spoke tension, enhances lateral stiffness, and extends wheel life for competitive riding. Superlight variant weighs 380 \u0026plusmn; 10g; standard variant 450 \u0026plusmn; 15g. OEM customization and a 3-year warranty included. Technical Specifications Wheel Size: 29er (622 mm BSD) Rim Height: 30mm Inner Width: 27mm Outer Width: 33mm Spoke Holes: 28\u0026ndash;32, offset for tension balance Effective Rim Diameter (ERD): 579mm Material: High-modulus Toray-grade carbon fiber Rim Shape: U-shaped, hookless tubeless compatible Recommended Spoke Tension: \u0026gt;280kg Weight Tolerance: Superlight: 380 \u0026plusmn; 10g | Standard: 450 \u0026plusmn; 15g Comparison Table: Similar Carbon 29er MTB Rims Rim Inner Width Profile Height Weight Use-Case This Product 27mm 30mm 380g \/ 450g XC \/ Trail Competitor XC930X-28 30mm 28mm 370g XC Race Competitor XC927X-25 27mm 25mm 365g XC \/ Trail Frequently Asked Questions (FAQ) What are the benefits of asymmetric carbon rims? Asymmetric rims enable more even spoke tension, which improves wheel strength and longevity compared to traditional designs. Is 27mm inner width suitable for trail and all-mountain use? Yes, 27mm internal width supports modern tire sizes for a balance of grip, rolling speed, and stability suited for XC and trail riding. How does 30mm profile height affect performance? 30mm profile provides an optimal blend of lateral stiffness and compliance, not overly deep—ideal for mixed terrain without excess weight. Does this rim support tubeless tires? Yes, hookless rim shape is fully compatible with tubeless setups, allowing lower pressures and improved puncture resistance. What’s included with purchase? 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Available in superlight (385g) and standard (455g) variants. Forward compressive strength rated \u0026gt;300kg, lateral torsion resistance \u0026gt;50kg, and spoke hole tension \u0026gt;280kg.\u003c\/p\u003e\n\u003ch3\u003eUse Cases \u0026amp; Fit\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIdeal for enduro racers, all-mountain riders, and premium cycling brands needing lightweight, high-stiffness platforms.\u003c\/li\u003e\n  \u003cli\u003eWorks with 2.3\"–2.6\" tires for optimal sidewall support, cornering stability, and reliable tubeless setup.\u003c\/li\u003e\n  \u003cli\u003eSupports builds for riders \u0026lt;100kg (superlight option). OEM, custom branding, and finish options available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWheel Size\u003c\/td\u003e\n\u003ctd\u003e29 inch (29er)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProfile Height\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight (Superlight\/Std)\u003c\/td\u003e\n\u003ctd\u003e385g \/ 455g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh modulus carbon fiber (Toray T700)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBead Type\u003c\/td\u003e\n\u003ctd\u003eHookless tubeless-compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMax Spoke Tension\u003c\/td\u003e\n\u003ctd\u003e280kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 years (OEM \u0026amp; custom supported)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhy Choose a 30mm Inner Carbon Rim?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBalances lateral stiffness and impact absorption on technical descents versus deeper, heavier profiles.\u003c\/li\u003e\n  \u003cli\u003eEnables secure fit and support for modern wide tires at lower pressures, reducing pinch-flats and squirm.\u003c\/li\u003e\n  \u003cli\u003eWeight savings (35–120g per rim vs aluminum\/alloy) translate to improved acceleration and climbing, but may require attentive setup for aggressive riders \u0026gt;100kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: What is the main advantage of a 30mm inner width carbon rim for trail and enduro?\u003c\/strong\u003e\u003cbr\u003eA: 30mm inner width provides enhanced tire support and sidewall stability for 2.3–2.6\" tires, resulting in improved cornering, predictable handling, and optimized traction.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: How much weight can I save switching from aluminum MTB rims?\u003c\/strong\u003e\u003cbr\u003eA: Typical weight savings are 80–150g per rim versus comparable aluminum models, depending on build specs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: Does this rim support tubeless setups?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the rim's hookless bead is designed for modern tubeless installations, compatible with leading tire brands.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: Are custom logos and drillings available?\u003c\/strong\u003e\u003cbr\u003eA: OEM and small-to-medium brand customizations are supported—including finish, decal, spoke hole count, and more.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eCompliant with SCA fatigue and impact standards. For complete build recommendations or technical documents, contact our engineering team.\u003c\/em\u003e\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29er Carbon MTB Rim 30mm Inner Width | 30mm Profile | Enduro \u0026 All-Mountain | 385g Superlight Option\",\n  \"description\": \"29-Inch Carbon MTB Rim for Enduro \u0026 All-Mountain Precision-engineered for enduro and all-mountain performance , this 29er carbon fiber rim features a 30mm inner width and 30mm profile height with a U-shaped, hookless tubeless-compatible bead. Available in superlight (385g) and standard (455g) variants. Forward compressive strength rated \u0026gt;300kg, lateral torsion resistance \u0026gt;50kg, and spoke hole tension \u0026gt;280kg. Use Cases \u0026 Fit Ideal for enduro racers, all-mountain riders, and premium cycling brands needing lightweight, high-stiffness platforms. Works with 2.3\\\"–2.6\\\" tires for optimal sidewall support, cornering stability, and reliable tubeless setup. Supports builds for riders \u0026lt;100kg (superlight option). OEM, custom branding, and finish options available. Technical Specifications Parameter Value Wheel Size 29 inch (29er) Inner Width 30mm Profile Height 30mm Weight (Superlight\/Std) 385g \/ 455g Material High modulus carbon fiber (Toray T700) Bead Type Hookless tubeless-compatible Max Spoke Tension 280kg Warranty 3 years (OEM \u0026 custom supported) Why Choose a 30mm Inner Carbon Rim? Balances lateral stiffness and impact absorption on technical descents versus deeper, heavier profiles. Enables secure fit and support for modern wide tires at lower pressures, reducing pinch-flats and squirm. Weight savings (35–120g per rim vs aluminum\/alloy) translate to improved acceleration and climbing, but may require attentive setup for aggressive riders \u0026gt;100kg. FAQs Q: What is the main advantage of a 30mm inner width carbon rim for trail and enduro? A: 30mm inner width provides enhanced tire support and sidewall stability for 2.3–2.6\\\" tires, resulting in improved cornering, predictable handling, and optimized traction. Q: How much weight can I save switching from aluminum MTB rims? A: Typical weight savings are 80–150g per rim versus comparable aluminum models, depending on build specs. Q: Does this rim support tubeless setups? A: Yes, the rim's hookless bead is designed for modern tubeless installations, compatible with leading tire brands. Q: Are custom logos and drillings available? A: OEM and small-to-medium brand customizations are supported—including finish, decal, spoke hole count, and more. Compliant with SCA fatigue and impact standards. 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Available in standard (455 ±10g) and superlight (385 ±10g) layups, with a 30mm inner width optimized for 2.3–2.6\" tires and a U-shaped profile that balances lateral stiffness with vertical compliance.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Size\u003c\/td\u003e\n\u003ctd\u003e29er (622mm BSD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eAsymmetric U-shape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Height\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e36mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e579mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Standard)\u003c\/td\u003e\n\u003ctd\u003e455 ±10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Superlight)\u003c\/td\u003e\n\u003ctd\u003e385 ±10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;50kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;280kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Equilibrium\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction\u003c\/td\u003e\n\u003ctd\u003eLeft 5° \/ Right 7° (or customized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (or customized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (or customized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (or customized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e45–65 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Asymmetric Design?\u003c\/h2\u003e\u003cp\u003eThe asymmetric spoke-bed offset redistributes spoke tension more evenly between drive-side and non-drive-side spokes. On a standard symmetric rim, drive-side spokes carry significantly higher tension, accelerating fatigue and increasing the risk of spoke breakage on high-torque trail riding. The asymmetric geometry reduces this imbalance, improving wheel durability and long-term trueness under load — a measurable advantage for freeride and enduro disciplines where repeated hard landings are the norm.\u003c\/p\u003e\u003ch2\u003e30mm Inner Width: Use-Case Context\u003c\/h2\u003e\u003cp\u003eA 30mm internal width is optimized for 2.3–2.5\" MTB tires, providing a stable casing base that reduces sidewall squirm under hard cornering. Compared to a narrower 25mm rim, the wider bed lowers the effective tire pressure needed for traction while maintaining casing integrity. \u003cem\u003eNote: Riders using tires wider than 2.6\" may benefit from a 35mm inner width rim; contact us to discuss the right option for your build.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eCustomization Options\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpoke hole count: configurable to rider and build requirements\u003c\/li\u003e\n\u003cli\u003eHole diameters: valve, spoke, and assembly holes all customizable\u003c\/li\u003e\n\u003cli\u003eNipple angle: Left 5° \/ Right 7° standard; custom angles available\u003c\/li\u003e\n\u003cli\u003eBranding: OEM\/private label available for cycling brands and teams\u003c\/li\u003e\n\u003cli\u003eSuperlight layup: 385 ±10g option for weight-sensitive XC\/enduro builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality \u0026amp; Warranty\u003c\/h2\u003e\u003cp\u003eManufactured under ISO-compliant production processes with over a decade of supply experience to cycling brands in Europe and North America. Every rim undergoes dynamic equilibrium testing (\u0026lt;3g tolerance) and flatness verification (\u0026lt;0.15mm) before dispatch. Backed by a \u003cstrong\u003e3-year warranty\u003c\/strong\u003e against manufacturing defects.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs this rim tubeless-compatible?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe hookless U-shape profile is designed for tubeless-ready (TR) tire systems. Ensure your tire is rated for hookless rims and does not exceed 65 psi maximum inflation pressure.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat tire width works best with a 30mm inner width rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThis rim is optimized for 2.3–2.6\" MTB tires. A 30mm inner width provides an ETRTO-compliant mounting base for this tire range, balancing sidewall support and volume.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does 385g compare to other lightweight 29er carbon MTB rims?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe superlight layup at 385 ±10g places this rim in the competitive range for carbon 29er enduro rims, which typically span 360–430g depending on width and height profile.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan I use this rim for aggressive freeride or jump riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The forward compressive strength (\u0026gt;300kg) and spoke hole tension resistance (\u0026gt;280kg) are rated for the high-impact loads associated with freeride and jump disciplines, within the 100kg rider weight limit.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs OEM or private label available?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. We supply small to medium cycling brands and professional teams with OEM and private-label options. Contact us to discuss minimum order quantities and customization scope.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29er carbon MTB cyclisme offset rim 30mm height 30mm wide for free rider,bola\",\n  \"description\": \"29er Asymmetric Carbon MTB Rim — 30mm Height \/ 30mm Inner Width A high-performance asymmetric carbon fiber mountain bike rim engineered for 29-inch freeride, enduro, and aggressive trail applications. Available in standard (455 ±10g) and superlight (385 ±10g) layups, with a 30mm inner width optimized for 2.3–2.6\\\" tires and a U-shaped profile that balances lateral stiffness with vertical compliance. Key Specifications Parameter Value Rim Size 29er (622mm BSD) Rim Shape Asymmetric U-shape Rim Height 30mm Outer Width 36mm Inner Width 30mm ERD 579mm Weight (Standard) 455 ±10g per rim Weight (Superlight) 385 ±10g per rim Forward Compressive Strength \u0026gt;300kg Lateral Torsion \u0026gt;50kg Spoke Hole Tension \u0026gt;280kg Dynamic Equilibrium \u0026lt;3g Flatness Tolerance \u0026lt;0.15mm Roundness Tolerance \u0026lt;0.3mm Nipple Direction Left 5° \/ Right 7° (or customized) Valve Hole Diameter 6.5mm (or customized) Spoke Hole Diameter 4.5mm (or customized) Assembly Hole Diameter 7.5mm (or customized) Tire Pressure Range 45–65 psi Max Rider Weight 100kg Why Asymmetric Design? The asymmetric spoke-bed offset redistributes spoke tension more evenly between drive-side and non-drive-side spokes. On a standard symmetric rim, drive-side spokes carry significantly higher tension, accelerating fatigue and increasing the risk of spoke breakage on high-torque trail riding. The asymmetric geometry reduces this imbalance, improving wheel durability and long-term trueness under load — a measurable advantage for freeride and enduro disciplines where repeated hard landings are the norm. 30mm Inner Width: Use-Case Context A 30mm internal width is optimized for 2.3–2.5\\\" MTB tires, providing a stable casing base that reduces sidewall squirm under hard cornering. Compared to a narrower 25mm rim, the wider bed lowers the effective tire pressure needed for traction while maintaining casing integrity. Note: Riders using tires wider than 2.6\\\" may benefit from a 35mm inner width rim; contact us to discuss the right option for your build. Customization Options Spoke hole count: configurable to rider and build requirements Hole diameters: valve, spoke, and assembly holes all customizable Nipple angle: Left 5° \/ Right 7° standard; custom angles available Branding: OEM\/private label available for cycling brands and teams Superlight layup: 385 ±10g option for weight-sensitive XC\/enduro builds Quality \u0026 Warranty Manufactured under ISO-compliant production processes with over a decade of supply experience to cycling brands in Europe and North America. Every rim undergoes dynamic equilibrium testing (\u0026lt;3g tolerance) and flatness verification (\u0026lt;0.15mm) before dispatch. Backed by a 3-year warranty against manufacturing defects. Frequently Asked Questions Is this rim tubeless-compatible? The hookless U-shape profile is designed for tubeless-ready (TR) tire systems. Ensure your tire is rated for hookless rims and does not exceed 65 psi maximum inflation pressure. 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It offers a balance of high strength, low weight, and wide tire support for enhanced grip and stability on technical terrain. Available in standard (465g ±15g) and superlight (410g ±10g) layups to suit various performance needs.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWheel Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e29er (622mm BSD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRim Profile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eU-shape, hookless tubeless-ready\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRim Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter \/ Inner Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40mm \/ 34mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eERD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e579mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard 465 ±15g | Superlight 410 ±10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-modulus Toray carbon fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompressive Strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLateral Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;50kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTubeless Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes (hookless bead)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 Years (Coverage: material \u0026amp; manufacturing defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003ePerformance \u0026amp; Use-Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e34mm inner maximizes tire air volume and patch for improved traction on rough, technical trails.\u003c\/li\u003e\n\u003cli\u003e30mm height balances efficiency with lateral stiffness for precise handling at speed.\u003c\/li\u003e\n\u003cli\u003eAvailable in two layups: Standard for durability, Superlight to save rotational mass.\u003c\/li\u003e\n\u003cli\u003eSupports 2.25\"–2.6\" tubeless tire setups for aggressive all-mountain, enduro, and competitive use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComparison Table\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eStandard\u003c\/th\u003e\n\u003cth\u003eSuperlight\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e465 ±15g\u003c\/td\u003e\n\u003ctd\u003e410 ±10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eToray Carbon\u003c\/td\u003e\n\u003ctd\u003eToray Carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300kg compressive\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300kg compressive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eWhat are the best 29er carbon MTB rims for enduro and all-mountain riding?\u003c\/h3\u003e\u003cp\u003eThis model features proven high-modulus carbon construction and wide 34 mm support, optimized for technical all-mountain and enduro use.\u003c\/p\u003e\u003ch3\u003eIs 34mm inner width good for aggressive riding?\u003c\/h3\u003e\u003cp\u003eYes, 34 mm accommodates large tires, increases stability, and supports lower pressures for technical trails.\u003c\/p\u003e\u003ch3\u003eDifference between standard and superlight layups?\u003c\/h3\u003e\u003cp\u003eThe superlight version saves 55g per rim, improving acceleration; the standard offers greater impact resistance. Both exceed \u0026gt;300kg strength benchmarks.\u003c\/p\u003e\u003ch3\u003eHow does carbon compare to aluminum for 29er rims?\u003c\/h3\u003e\u003cp\u003eCarbon fiber typically provides higher stiffness-to-weight ratio and better vibration damping; however, carbon costs more and can be more brittle if abused.\u003c\/p\u003e\u003ch3\u003eAre wide carbon rims better for traction?\u003c\/h3\u003e\u003cp\u003eWider rims (30–34mm) increase tire stability and contact patch, improving grip in demanding enduro conditions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29er Carbon MTB Rim 30mm Height 34mm Inner Width – Enduro \u0026 All-Mountain\",\n  \"description\": \"Overview: 29er Carbon MTB Rim for Enduro \u0026 All-Mountain Designed for aggressive trail and enduro riding, this 29-inch carbon rim features a 34\u0026nbsp;mm inner width and 30\u0026nbsp;mm profile height. It offers a balance of high strength, low weight, and wide tire support for enhanced grip and stability on technical terrain. Available in standard (465g ±15g) and superlight (410g ±10g) layups to suit various performance needs. Technical Specifications Wheel Size 29er (622mm BSD) Rim Profile U-shape, hookless tubeless-ready Rim Height 30mm Outer \/ Inner Width 40mm \/ 34mm ERD 579mm Weight Standard 465 ±15g | Superlight 410 ±10g Material High-modulus Toray carbon fiber Compressive Strength \u0026gt;300kg Lateral Resistance \u0026gt;50kg Tubeless Compatibility Yes (hookless bead) Warranty 3 Years (Coverage: material \u0026amp; manufacturing defects) Performance \u0026 Use-Cases 34mm inner maximizes tire air volume and patch for improved traction on rough, technical trails. 30mm height balances efficiency with lateral stiffness for precise handling at speed. Available in two layups: Standard for durability, Superlight to save rotational mass. Supports 2.25\u0026quot;–2.6\u0026quot; tubeless tire setups for aggressive all-mountain, enduro, and competitive use. Comparison Table Spec Standard Superlight Weight 465 ±15g 410 ±10g Material Toray Carbon Toray Carbon Strength \u0026gt;300kg compressive \u0026gt;300kg compressive FAQs What are the best 29er carbon MTB rims for enduro and all-mountain riding? This model features proven high-modulus carbon construction and wide 34\u0026nbsp;mm support, optimized for technical all-mountain and enduro use. Is 34mm inner width good for aggressive riding? Yes, 34\u0026nbsp;mm accommodates large tires, increases stability, and supports lower pressures for technical trails. Difference between standard and superlight layups? The superlight version saves 55g per rim, improving acceleration; the standard offers greater impact resistance. Both exceed \u003e300kg strength benchmarks. How does carbon compare to aluminum for 29er rims? Carbon fiber typically provides higher stiffness-to-weight ratio and better vibration damping; however, carbon costs more and can be more brittle if abused. Are wide carbon rims better for traction? Wider rims (30–34mm) increase tire stability and contact patch, improving grip in demanding enduro conditions.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Mountain Bike Rim\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/MTB40-30-29.jpg?v=1714123208\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1_56d7c751-e421-4ed9-9d7f-b2067e0a454d.png?v=1714123208\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/hookless_51a7fa2b-8217-40a1-976d-06ffc0a8ed40.jpg?v=1714123208\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/redbola_990ea2c2-e726-4c2e-a096-5ed16af4fef8.jpg?v=1714123208\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/whitebola_29a34cfb-8792-4ea0-8c72-82b88d8fefef.jpg?v=1714123208\",\n    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Choose Standard (430 ± 15g) or Superlight (365 ± 10g) build. Asymmetric spoke bed optimizes tension, reducing wheel fatigue and improving lateral stiffness on technical terrain.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRim Size: 27.5\" (650B) for modern XC \u0026amp; all-mountain bikes\u003c\/li\u003e\n\u003cli\u003eProfile: 30mm depth, 27mm internal width, 33mm external width – maximizes tire stability for 2.2\"–2.6\" tires\u003c\/li\u003e\n\u003cli\u003eConstruction: High-modulus carbon fiber (T700\/T800 grade), U-shape hookless, tubeless-ready\u003c\/li\u003e\n\u003cli\u003eWeight: Standard 430g ± 15g \/ Superlight 365g ± 10g\u003c\/li\u003e\n\u003cli\u003eAsymmetric spoke hole drilling: Reduces peak spoke tension difference between drive\/non-drive sides for improved longevity\u003c\/li\u003e\n\u003cli\u003eStrength: Forward Compressive \u0026gt;300kg, Lateral Torsion \u0026gt;50kg (internal test standards)\u003c\/li\u003e\n\u003cli\u003eCustom options: Spoke count, valve type, drilling angle\u003c\/li\u003e\n\u003cli\u003eCertifications: Dynamic Equilibrium \u0026lt;3g out-of-round (internal), 3-year limited warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecification Comparison\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRim Size\u003c\/th\u003e\n\u003cth\u003eInternal Width\u003c\/th\u003e\n\u003cth\u003eRim Height\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eOffset (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThis Rim\u003c\/td\u003e\n\u003ctd\u003e27.5\"\u003c\/td\u003e\n\u003ctd\u003e27mm\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e365–430g\u003c\/td\u003e\n\u003ctd\u003eAsymmetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXC728X\u003c\/td\u003e\n\u003ctd\u003e27.5\"\u003c\/td\u003e\n\u003ctd\u003e28mm\u003c\/td\u003e\n\u003ctd\u003e22mm\u003c\/td\u003e\n\u003ctd\u003e315–345g\u003c\/td\u003e\n\u003ctd\u003eAsymmetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTR730X\u003c\/td\u003e\n\u003ctd\u003e27.5\"\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e375g\u003c\/td\u003e\n\u003ctd\u003eAsymmetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXC724X\u003c\/td\u003e\n\u003ctd\u003e27.5\"\u003c\/td\u003e\n\u003ctd\u003e24mm\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003ctd\u003e285–310g\u003c\/td\u003e\n\u003ctd\u003eAsymmetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs a 27mm inner width carbon rim suitable for aggressive all-mountain riding?\u003c\/strong\u003e\u003cbr\u003eYes, 27mm inner width supports wider tires (2.2\"–2.6\"), improving sidewall support and grip on technical and aggressive terrain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the weight difference between Standard and Superlight models?\u003c\/strong\u003e\u003cbr\u003eSuperlight: 365 ± 10g; Standard: 430 ± 15g. Weight difference: approximately 65g per rim, impacting acceleration and climbing ease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhy choose an asymmetric carbon rim?\u003c\/strong\u003e\u003cbr\u003eAsymmetric geometry offsets spoke holes, balancing spoke tension and enhancing wheel durability in high-stress riding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre there carbon 27.5 rims under 400g for XC racing?\u003c\/strong\u003e\u003cbr\u003eYes, the Superlight variant at 365g is optimized for competitive XC use and meets sub-400g requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does your 27.5\" rim compare to other leading carbon XC rims?\u003c\/strong\u003e\u003cbr\u003eThis rim offers a balance of high lateral\/torsional strength, modern internal width, and verified test metrics matching peer review standards for EU\/NA brands.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 28\/28 \/ Normal","offer_id":48092911763710,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 28\/28 \/ Super Light","offer_id":48092911796478,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Normal","offer_id":48092911829246,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Super Light","offer_id":48092911862014,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Normal","offer_id":48092911894782,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Super Light","offer_id":48092911927550,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Normal","offer_id":48092911960318,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Super Light","offer_id":48092911993086,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Normal","offer_id":48092912025854,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Super Light","offer_id":48092912058622,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Normal","offer_id":48092912091390,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Super Light","offer_id":48092912124158,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Normal","offer_id":48092912156926,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Super Light","offer_id":48092912189694,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Normal","offer_id":48092912222462,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Super Light","offer_id":48092912255230,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Normal","offer_id":48092912287998,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Super Light","offer_id":48092912320766,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Normal","offer_id":48092912353534,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Super Light","offer_id":48092912386302,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Normal","offer_id":48092912419070,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Super Light","offer_id":48092912451838,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Normal","offer_id":48092912484606,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Super Light","offer_id":48092912517374,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/29_inch_rims.png?v=1780298362"},{"product_id":"27-5-carbon-mtb-rim-25mm-internal-30mm-profile-enduro-am","title":"27.5\" Carbon MTB Rim – 25mm Internal, 30mm Profile, Enduro\/AM","description":"\u003ch2\u003e27.5\" Carbon MTB Rim – Technical Performance for Enduro and All-Mountain\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDirect answer:\u003c\/strong\u003e This 27.5-inch carbon MTB rim features a 25mm inner width and 30mm profile for optimized tire stability, strength, and low weight—tested for enduro and all-mountain riding. Available in 315g (superlight) and 380g (standard) builds for premium performance with modern high-volume tires.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Size:\u003c\/strong\u003e 27.5\" (650B)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Width:\u003c\/strong\u003e 25mm – supports 2.3\"–2.6\" MTB tires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile Height:\u003c\/strong\u003e 30mm for lateral stiffness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eERD:\u003c\/strong\u003e 540mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 315g ±10g (superlight), 380g ±15g (standard), per rim\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Premium carbon fiber (T700\/T800 blend)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Shape:\u003c\/strong\u003e U-channel, hookless tubeless-ready\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Forward Compressive Strength:\u003c\/strong\u003e \u0026gt;300kg (laboratory-tested)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomizable:\u003c\/strong\u003e Options for spoke count, custom branding\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePerformance Specification Table\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Width\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfile Height\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e315g \/ 380g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRider Weight Limit\u003c\/td\u003e\n\u003ctd\u003eUp to 120kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibile Tires\u003c\/td\u003e\n\u003ctd\u003e2.3\"–2.6\" Tubeless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Material\u003c\/td\u003e\n\u003ctd\u003eHigh-strength carbon fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eReal-World Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAggressive Trail \u0026amp; Enduro:\u003c\/strong\u003e Delivers lateral stiffness and impact resistance over rough terrain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Race Builds:\u003c\/strong\u003e 315g superlight option suits competitive climbers or weight-focused trail bikes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUrban E-MTB or AM Riding:\u003c\/strong\u003e Maintains stability and tubeless performance with modern tire profiles.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComparison: Carbon vs Alloy 27.5\" Enduro Rims\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eWeight (avg.)\u003c\/th\u003e\n\u003cth\u003eImpact Resistance\u003c\/th\u003e\n\u003cth\u003eTubeless Ready\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon (this rim)\u003c\/td\u003e\n\u003ctd\u003e315–380g\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300kg (tested)\u003c\/td\u003e\n\u003ctd\u003eYes, hookless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlloy\u003c\/td\u003e\n\u003ctd\u003e480–520g\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;220kg\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is a 25mm inner width sufficient for technical enduro riding?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Yes. 25mm inner widths deliver optimal support for 2.3–2.6\" enduro tires, balancing responsive handling and puncture resistance at lower pressures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What advantage does a 30mm profile bring?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Enhanced lateral stiffness for sharper cornering, proven by comparative tests with 23.5–26mm profile rims.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How does this rim compare to 31-32mm internal competitors?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Offers lighter weight while providing reliable tire stability for most enduro\/all-mountain use. 31-32mm may be better for plus-size tires (\u0026gt;2.6\").\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the maximum recommended rider weight?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Lab-tested for up to 120kg rider+bike weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is this rim compatible with both tubeless and tube setups?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Yes. Hookless channel supports both systems. For optimal performance, use with modern tubeless tires.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCertifications\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eTested to ISO 4210-7:2014 standards (safety requirements for wheels and rims)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBrand Commitment:\u003c\/strong\u003e Decade-long engineering partnership with small-medium cycling brands and pro teams, delivering custom options, quality assurance, and competitive pricing, all backed by sustainable sourcing.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"27.5\\\" Carbon MTB Rim 30mm Profile 25mm Inner Width – Enduro \u0026 All-Mountain\",\n  \"description\": \"27.5\\\" Carbon MTB Rim – Technical Performance for Enduro and All-Mountain Direct answer: This 27.5-inch carbon MTB rim features a 25mm inner width and 30mm profile for optimized tire stability, strength, and low weight—tested for enduro and all-mountain riding. Available in 315g (superlight) and 380g (standard) builds for premium performance with modern high-volume tires. Key Features Wheel Size: 27.5\\\" (650B) Internal Width: 25mm – supports 2.3\\\"–2.6\\\" MTB tires Profile Height: 30mm for lateral stiffness ERD: 540mm Weight: 315g ±10g (superlight), 380g ±15g (standard), per rim Material: Premium carbon fiber (T700\/T800 blend) Rim Shape: U-channel, hookless tubeless-ready Max Forward Compressive Strength: \u0026gt;300kg (laboratory-tested) Customizable: Options for spoke count, custom branding Performance Specification Table Parameter Specification Internal Width 25mm Profile Height 30mm Weight 315g \/ 380g Rider Weight Limit Up to 120kg Compatibile Tires 2.3\\\"–2.6\\\" Tubeless Rim Material High-strength carbon fiber Real-World Use Cases Aggressive Trail \u0026amp; Enduro: Delivers lateral stiffness and impact resistance over rough terrain. 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and features a modern 25mm inner width. Fully ETRTO compliant for tire\/rim safety and tested to \u0026gt;280kgf spoke tension. 3-year warranty and OEM customization available for brands and teams.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e650B \/ 27.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRim Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInner Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e315 ± 10g (superlight); 380 ± 15g (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProfile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eU-shaped, Asymmetric (offset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTubeless Presta (French) valve compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpoke Holes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28\/32 available, \u0026gt;280kgf tension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eToray unidirectional and woven carbon fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eETRTO 2023, ISO 4210-7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eXC \u0026amp; Trail Performance, Verified Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e25mm inner width excels with 2.1–2.4\" XC and trail tires, supporting 45–65psi, aligning with modern tire standards.\u003c\/li\u003e\n\u003cli\u003eAsymmetric offset design improves spoke angle to balance tension, increasing lateral rigidity and durability for racing and all-mountain use.\u003c\/li\u003e\n\u003cli\u003eHookless tubeless profile reduces pinch flats, supports lower tire pressure, and ensures secure tire fit.\u003c\/li\u003e\n\u003cli\u003eMeets ETRTO and ISO industry standards for rim\/tire safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison Table: 650B Carbon MTB Rims\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eBola 650B\u003c\/th\u003e\n\u003cth\u003eUltra XC Comp\u003c\/th\u003e\n\u003cth\u003eOEM 650B Pro\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (g)\u003c\/td\u003e\n\u003ctd\u003e315 \/ 380\u003c\/td\u003e\n\u003ctd\u003e370\u003c\/td\u003e\n\u003ctd\u003e400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width (mm)\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAsymmetric\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Height (mm)\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTubeless 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racing and trail environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the main advantage of an asymmetric (offset) rim in MTB?\u003c\/strong\u003e \u003cbr\u003eA: Offset increases spoke tension balance between drive\/non-drive sides, improving wheel stiffness and longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What tire and hub standards are compatible?\u003c\/strong\u003e \u003cbr\u003eA: Compatible with 27.5\"\/650B wheels, ETRTO-compliant tubeless tires (2.1–2.4\"), and Boost\/non-Boost hubs supporting 28–32 spokes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How does the rim compare with other ultralight 650B options?\u003c\/strong\u003e \u003cbr\u003eA: The Bola rim offers lower verified weight, ETRTO\/ISO compliance, asymmetric design, and OEM customization for brand-focused buyers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 28\/28 \/ 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Engineered with a U-channel profile and 30mm height, it's suitable for tubeless setups (45–65 psi, max rider weight 100kg). Widely specified by competitive teams seeking stability and traction with 2.25\"–2.6\" MTB or 35–42mm cyclocross tires.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-modulus carbon fiber (T700\/T800 equivalent)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (Superlight):\u003c\/strong\u003e 370g ±10g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Width:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Width:\u003c\/strong\u003e 36mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 30mm (U-shape, hookless-compatible)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Rim Diameter (ERD):\u003c\/strong\u003e 540mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompressive Strength:\u003c\/strong\u003e \u0026gt;300kg; \u003cstrong\u003eLateral Torsion:\u003c\/strong\u003e \u0026gt;50kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake Type:\u003c\/strong\u003e Disc-specific\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3 years (manufacturing defects)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecification Comparison\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eThis Rim\u003c\/th\u003e\n\u003cth\u003eIndustry Typical\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e370g\u003c\/td\u003e\n\u003ctd\u003e400–450g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e25–28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTubeless Ready\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVaries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300kg\u003c\/td\u003e\n\u003ctd\u003e200–250kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is a 30mm inner width suitable for cyclocross?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. 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It is optimized for 2.3\"–2.6\" mountain and 33–40mm cyclocross tire compatibility, all-mountain\/enduro conditions, and is designed for tubeless setups. \u003cstrong\u003eWhy asymmetric design?\u003c\/strong\u003e The offset spoke bed equalizes tension (nipple angle L5°\/R7°), increasing lateral stiffness and wheel durability, especially under heavy torque loads. 3-year manufacturer warranty applies.\u003c\/p\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-modulus carbon fiber (T700\/T800)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeights:\u003c\/strong\u003e Standard 435g ± 15g; Superlight 370g ± 10g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Width:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Diameter:\u003c\/strong\u003e 27.5\" \/ 650B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless Ready:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Rider Weight:\u003c\/strong\u003e 100kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTire Pressure:\u003c\/strong\u003e 45–65 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3 years (manufacturing defects; excludes crash)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompliant with:\u003c\/strong\u003e ISO 4210 standards, internal quality\/QC protocols\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComparison Table\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eStandard\u003c\/th\u003e\n\u003cth\u003eSuperlight\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e435g ± 15g\u003c\/td\u003e\n\u003ctd\u003e370g ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eAll-Mountain\/Enduro\u003c\/td\u003e\n\u003ctd\u003eCyclocross\/XC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Tire Size\u003c\/td\u003e\n\u003ctd\u003e2.6\" MTB\u003c\/td\u003e\n\u003ctd\u003e2.4\" MTB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is 30mm inner width suitable for aggressive trail or cyclocross?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Yes; 30mm offers stable tire support for 2.3–2.6\" MTB and 33–40mm cyclocross tires, improving traction and cornering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What makes an asymmetric carbon rim better?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Offset profile balances spoke tension, improving strength and long-term trueness compared to standard symmetric rims.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I use this rim with standard (non-tubeless) tires?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Yes; compatible with both tubeless and clincher tires when used with appropriate rim tape.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the expected price range for an ultralight carbon rim under 400g?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Premium, custom carbon rims in the 350–400g range typically start from $160–$270 USD, depending on spec and warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What certifications or testing are performed?\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eA:\u003c\/em\u003e Each rim is tested to ISO 4210 and internal fatigue\/impact standards, with QC data available on request.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Asymmetric Carbon 27.5er MTB Rim – 30mm Inner Width, 435g \/ 370g Ultralight, Tubeless-Ready for All-Mountain \u0026 Cyclocross\",\n  \"description\": \"Asymmetric Carbon 27.5\\\" MTB Rim – 30mm Inner Width, Tubeless-Ready Direct answer: This asymmetric carbon 27.5 MTB rim features a 30mm inner width and supports both standard (435g) and superlight (370g) build grades. 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\u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium:\u003c\/strong\u003e \u0026lt;3g imbalance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison: 30mm vs. 25mm High Carbon Rims\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003e30mm High (this rim)\u003c\/th\u003e\n\u003cth\u003e25mm High\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e390g (superlight)\u003c\/td\u003e\n\u003ctd\u003eTypically 380-410g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrength\u003c\/td\u003e\n\u003ctd\u003eHigher lateral\/torsional stiffness\u003c\/td\u003e\n\u003ctd\u003eLower stiffness, more flex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdeal Use\u003c\/td\u003e\n\u003ctd\u003eAll-mountain, aggressive XC\u003c\/td\u003e\n\u003ctd\u003eXC, less technical terrain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is a 34mm inner width rim suitable for 2.3\"–2.6\" MTB tires?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the 34mm width provides optimal support for 2.3–2.6 inch mountain bike tires, balancing sidewall support and volume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the advantage of a superlight 390g rim?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Lower rotational weight improves acceleration and climbing, supporting endurance and race applications, while the structural design maintains stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How does hookless rim design affect tubeless setup?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Hookless rims facilitate tubeless tire 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BMX racing, bike polo, and urban performance riding where aerodynamic stiffness, low rotational weight, and mechanical reliability are critical. Available in disc brake and rim brake (road) configurations to suit varied frame setups.\u003c\/p\u003e\u003ch3\u003eWeight Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003ePosition\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc Brake Clincher\u003c\/td\u003e\n\u003ctd\u003eFront\u003c\/td\u003e\n\u003ctd\u003e600 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc Brake Clincher\u003c\/td\u003e\n\u003ctd\u003eRear\u003c\/td\u003e\n\u003ctd\u003e750 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoad \/ Rim Brake Clincher\u003c\/td\u003e\n\u003ctd\u003eFront\u003c\/td\u003e\n\u003ctd\u003e580 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoad \/ Rim Brake Clincher\u003c\/td\u003e\n\u003ctd\u003eRear\u003c\/td\u003e\n\u003ctd\u003e720 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eKey Technical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Diameter:\u003c\/strong\u003e 20 inch \/ ETRTO 406\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Width:\u003c\/strong\u003e 25 mm (clincher external)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Full carbon fiber three-spoke monocoque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTire Compatibility:\u003c\/strong\u003e Clincher (tube-type)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake Compatibility:\u003c\/strong\u003e Disc brake or rim brake (road) — specify at order\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3 years\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePerformance Tradeoffs to Consider\u003c\/h3\u003e\u003cp\u003eThree-spoke carbon wheels deliver measurably lower aerodynamic drag and higher lateral stiffness compared to conventional spoked wheels, making them well-suited for criterium-style BMX and polo circuits. \u003cstrong\u003eNote:\u003c\/strong\u003e the fixed three-spoke monocoque structure offers less on-the-fly tension adjustment than traditional wire-spoked wheels — factor this into maintenance planning for high-impact disciplines.\u003c\/p\u003e\u003ch3\u003eWho Is This Wheelset For?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSmall to medium cycling brands sourcing OEM 20-inch performance wheels\u003c\/li\u003e\n\u003cli\u003eProfessional and club-level BMX racing teams requiring aerodynamic, lightweight wheelsets\u003c\/li\u003e\n\u003cli\u003eBike polo players seeking durable, stiff rims that resist lateral flex under load\u003c\/li\u003e\n\u003cli\u003eCustom urban and competition bike builders working with 406 clincher standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between the disc brake and road brake versions?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe disc brake variant adds a rotor mounting interface and is approximately 20 g heavier per wheel due to the additional hub material. 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Weight Specifications Configuration Position Weight Disc Brake Clincher Front 600 g Disc Brake Clincher Rear 750 g Road \/ Rim Brake Clincher Front 580 g Road \/ Rim Brake Clincher Rear 720 g Key Technical Specifications Rim Diameter: 20 inch \/ ETRTO 406 Rim Width: 25 mm (clincher external) Construction: Full carbon fiber three-spoke monocoque Tire Compatibility: Clincher (tube-type) Brake Compatibility: Disc brake or rim brake (road) — specify at order Warranty: 3 years Performance Tradeoffs to Consider Three-spoke carbon wheels deliver measurably lower aerodynamic drag and higher lateral stiffness compared to conventional spoked wheels, making them well-suited for criterium-style BMX and polo circuits. Note: the fixed three-spoke monocoque structure offers less on-the-fly tension adjustment than traditional wire-spoked wheels — factor this into maintenance planning for high-impact disciplines. Who Is This Wheelset For? Small to medium cycling brands sourcing OEM 20-inch performance wheels Professional and club-level BMX racing teams requiring aerodynamic, lightweight wheelsets Bike polo players seeking durable, stiff rims that resist lateral flex under load Custom urban and competition bike builders working with 406 clincher standards Frequently Asked Questions What is the difference between the disc brake and road brake versions? The disc brake variant adds a rotor mounting interface and is approximately 20 g heavier per wheel due to the additional hub material. Both share the same 25 mm wide, 406-diameter carbon rim shell. Are these wheels compatible with standard 20-inch BMX tires? Yes. The ETRTO 406 bead diameter is the standard for 20-inch folding bikes, BMX bikes, and polo bikes. Confirm your tire's bead diameter is 406 (not 451, which is the alternate 20-inch standard). Can I order a front wheel only or rear wheel only? Yes. Front and rear wheels are available individually. Specify brake type and position when ordering. What warranty is provided? A 3-year manufacturer warranty covers structural defects in the carbon layup and hub assembly under normal riding conditions. Do these wheels support tubeless tires? These wheels are clincher (tube-type) only. Tubeless conversion is not supported on this rim profile.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1.0png.png?v=1714356059\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1.00png.png?v=1714356059\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"price\": \"480.00\",\n    \"priceCurrency\": \"USD\",\n    \"url\": \"https:\/\/bolacarbon.com\/products\/20inch-406-clincher-25mm-wide-carbon-bike-three-spoke-wheel-for-bmx-bola\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"https:\/\/bolacarbon.com\"\n    }\n  }\n}\n\u003c\/script\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"Default Title","offer_id":45178576863486,"sku":null,"price":480.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1.0png.png?v=1780298559"},{"product_id":"20-451-tubeless-three-spoke-carbon-wheelset-26mm-wide-folding-road-bike","title":"20\" 451 Tubeless Three-Spoke Carbon Wheelset – 26mm Wide | Folding \u0026 Road Bike","description":"\u003ch2\u003e20\" 451 Tubeless Three-Spoke Carbon Wheelset – Performance Overview\u003c\/h2\u003e\u003cp\u003eThis 451 BSD standard wheelset offers a high-modulus carbon fiber monocoque design for improved power transfer and durability. Built for folding bikes, small-wheel road bikes, and time trial applications, it supports tubeless setups for reduced rolling resistance and fewer flats. The 26mm external rim width (19mm internal) balances aerodynamic efficiency with tire stability.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Standard:\u003c\/strong\u003e 451 BSD (20-inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Construction:\u003c\/strong\u003e Tubeless-ready, three-spoke carbon fiber monocoque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Rim Width:\u003c\/strong\u003e 26mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Rim Width:\u003c\/strong\u003e 19mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront Wheel Weight:\u003c\/strong\u003e 550g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear Wheel Weight:\u003c\/strong\u003e 650g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Weight:\u003c\/strong\u003e 1,200g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-modulus carbon fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest Use:\u003c\/strong\u003e Folding bike, small-wheel road, time trial, triathlon\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePerformance \u0026amp; Use-Case Mapping\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEngineered for professional racing and endurance cycling where lightweight and stiffness are critical.\u003c\/li\u003e\n\u003cli\u003eThree-spoke design reduces drag in time trial scenarios while optimizing lateral stiffness for small-wheel formats.\u003c\/li\u003e\n\u003cli\u003eAdapted for premium urban mobility brands requiring reliability and low maintenance due to tubeless capability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComparison Table\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eThis Model\u003c\/th\u003e\n\u003cth\u003eTypical Alloy 451 Wheelset\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Front\/Rear)\u003c\/td\u003e\n\u003ctd\u003e550g \/ 650g\u003c\/td\u003e\n\u003ctd\u003e820g \/ 930g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCarbon (High-modulus)\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003e26mm Wide, 3-Spoke\u003c\/td\u003e\n\u003ctd\u003e19-22mm Wide, 20-28 Spoke\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTubeless Ready\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eRare\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Are three-spoke carbon wheels suitable for triathlon?\u003c\/strong\u003e\u003cbr\u003eA: Three-spoke carbon wheels are aerodynamically optimized for time trial and triathlon disciplines, with significant drag reduction verified by industry wind tunnel tests (referencing EN 14781:2005 bicycle wheel standards).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the ideal rim width for 451 wheels?\u003c\/strong\u003e\u003cbr\u003eA: 26mm external rim width provides enhanced stability, improved handling, and compatibility with wider tubeless tires for both performance and comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How do front and rear wheel weights influence ride quality?\u003c\/strong\u003e\u003cbr\u003eA: A lighter front wheel (550g) improves acceleration, while the marginally heavier rear (650g) aids in power transfer and overall balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is this wheelset compatible with all folding and road bikes?\u003c\/strong\u003e\u003cbr\u003eA: This wheelset is compatible with bicycles using 451 BSD (20\") wheels. Check hub dimensions and frame clearance before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCertifications \u0026amp; Testing\u003c\/h3\u003e\u003cp\u003eManufactured according to ISO 4210-7 safety standards for bicycle wheels. Each wheel undergoes dynamic balance inspection and impact testing.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"20\\\" 451 Tubeless Three-Spoke Carbon Wheelset – 26mm Wide, Folding \u0026 Road Bike\",\n  \"description\": \"20\\\" 451 Tubeless Three-Spoke Carbon Wheelset – Performance Overview This 451 BSD standard wheelset offers a high-modulus carbon fiber monocoque design for improved power transfer and durability. Built for folding bikes, small-wheel road bikes, and time trial applications, it supports tubeless setups for reduced rolling resistance and fewer flats. The 26mm external rim width (19mm internal) balances aerodynamic efficiency with tire stability. Key Specifications Rim Standard: 451 BSD (20-inch) Rim Construction: Tubeless-ready, three-spoke carbon fiber monocoque External Rim Width: 26mm Internal Rim Width: 19mm Front Wheel Weight: 550g Rear Wheel Weight: 650g Total Weight: 1,200g Material: High-modulus carbon fiber Best Use: Folding bike, small-wheel road, time trial, triathlon Performance \u0026 Use-Case Mapping Engineered for professional racing and endurance cycling where lightweight and stiffness are critical. Three-spoke design reduces drag in time trial scenarios while optimizing lateral stiffness for small-wheel formats. Adapted for premium urban mobility brands requiring reliability and low maintenance due to tubeless capability. Comparison Table Feature This Model Typical Alloy 451 Wheelset Weight (Front\/Rear) 550g \/ 650g 820g \/ 930g Material Carbon (High-modulus) Aluminum Alloy Rim Profile 26mm Wide, 3-Spoke 19-22mm Wide, 20-28 Spoke Tubeless Ready Yes Rare FAQs Q: Are three-spoke carbon wheels suitable for triathlon? A: Three-spoke carbon wheels are aerodynamically optimized for time trial and triathlon disciplines, with significant drag reduction verified by industry wind tunnel tests (referencing EN 14781:2005 bicycle wheel standards). Q: What is the ideal rim width for 451 wheels? A: 26mm external rim width provides enhanced stability, improved handling, and compatibility with wider tubeless tires for both performance and comfort. Q: How do front and rear wheel weights influence ride quality? A: A lighter front wheel (550g) improves acceleration, while the marginally heavier rear (650g) aids in power transfer and overall balance. Q: Is this wheelset compatible with all folding and road bikes? A: This wheelset is compatible with bicycles using 451 BSD (20\\\") wheels. Check hub dimensions and frame clearance before installation. Certifications \u0026 Testing Manufactured according to ISO 4210-7 safety standards for bicycle wheels. Each wheel undergoes dynamic balance inspection and impact testing.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Carbon Bicycle Wheelset\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1.00png_c603df38-89d4-40a5-ba88-b7e57670b309.png?v=1714356447\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1.0png_37f9e1fb-1063-4443-a9f7-9e412e7378a6.png?v=1714356454\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"price\": \"550.00\",\n    \"priceCurrency\": \"USD\",\n    \"url\": \"https:\/\/bolacarbon.com\/products\/20-451-tubeless-26mm-wide-three-spoke-carbon-bike-wheel-for-free-rider-bola\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"https:\/\/bolacarbon.com\"\n    }\n  }\n}\n\u003c\/script\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"Default Title","offer_id":45178582139134,"sku":null,"price":450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1.00png_c603df38-89d4-40a5-ba88-b7e57670b309.png?v=1780298559"},{"product_id":"20-451-carbon-tubeless-junior-wheelset-5-spoke-lightweight","title":"20\" 451 Carbon Five-Spoke Tubeless Wheelset for Junior Racers","description":"\u003ch2\u003e20\" 451 Carbon Five-Spoke Tubeless Wheelset for Junior Racing\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDirect answer:\u003c\/strong\u003e This 20-inch 451 carbon five-spoke tubeless wheelset is engineered for junior cyclists in youth time trials, triathlons, and competitive road events, providing low weight (550g front \/ 650g rear), 26mm internal width, and aerodynamic monocoque carbon construction for stable, efficient performance.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRim Standard:\u003c\/strong\u003e 451 (ETRTO 451, 20-inch diameter)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal Width:\u003c\/strong\u003e 26mm for broad tire compatibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Five-spoke carbon monocoque, tubeless-ready\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFront Wheel Weight:\u003c\/strong\u003e 550g | \u003cstrong\u003eRear Wheel Weight:\u003c\/strong\u003e 650g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Presta\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntended Use:\u003c\/strong\u003e Junior\/youth competitive cycling, triathlon, time trial\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3-year manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e451 vs 406 Rim Standard: Which for Junior Racing?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003e451 (20\")\u003c\/th\u003e\n\u003cth\u003e406 (20\")\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Diameter (mm)\u003c\/td\u003e\n\u003ctd\u003e451\u003c\/td\u003e\n\u003ctd\u003e406\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Use\u003c\/td\u003e\n\u003ctd\u003eJunior race, track, triathlon\u003c\/td\u003e\n\u003ctd\u003eBMX, folding bikes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed Potential\u003c\/td\u003e\n\u003ctd\u003eHigher (larger diameter)\u003c\/td\u003e\n\u003ctd\u003eLower (smaller diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBuyer FAQs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Are tubeless carbon wheelsets worth it for junior cyclists?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Tubeless wheelsets enable reduced tire pressure for enhanced grip and rolling efficiency, which can benefit junior racers by improving control and speed, especially on mixed surfaces.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How much do quality 20” 451 carbon wheels weigh?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Leading 451 carbon junior wheelsets typically weigh 500–700g (front) and 600–800g (rear). Lighter weight supports faster acceleration for youth riders.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What should I look for in a junior five-spoke carbon wheelset?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Key factors: true 451 rim standard, low total system weight, proven tubeless compatibility, construction quality, and warranty support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is 451 better than 406 for junior competitive cycling?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e 451 offers increased tire diameter, enabling higher speeds and improved handling compared to 406, preferred for competitive youth events.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTested for consistent quality. Suitable for small to medium cycling brands, teams, and demanding young riders seeking performance and reliability in junior racing scenarios.\u003c\/em\u003e\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"20 Inch 451 Carbon Five-Spoke Tubeless Wheelset for Junior Cyclists – 26mm Wide, 550g Front \/ 650g Rear\",\n  \"description\": \"20\u0026quot; 451 Carbon Five-Spoke Tubeless Wheelset for Junior Racing Direct answer: This 20-inch 451 carbon five-spoke tubeless wheelset is engineered for junior cyclists in youth time trials, triathlons, and competitive road events, providing low weight (550g front \/ 650g rear), 26mm internal width, and aerodynamic monocoque carbon construction for stable, efficient performance. Key Features \u0026 Specifications Rim Standard: 451 (ETRTO 451, 20-inch diameter) Internal Width: 26mm for broad tire compatibility Construction: Five-spoke carbon monocoque, tubeless-ready Front Wheel Weight: 550g | Rear Wheel Weight: 650g Valve Type: Presta Intended Use: Junior\/youth competitive cycling, triathlon, time trial Warranty: 3-year manufacturer warranty 451 vs 406 Rim Standard: Which for Junior Racing? Feature 451 (20\\\") 406 (20\\\") Tire Diameter (mm) 451 406 Common Use Junior race, track, triathlon BMX, folding bikes Speed Potential Higher (larger diameter) Lower (smaller diameter) Buyer FAQs Q: Are tubeless carbon wheelsets worth it for junior cyclists? A: Tubeless wheelsets enable reduced tire pressure for enhanced grip and rolling efficiency, which can benefit junior racers by improving control and speed, especially on mixed surfaces. Q: How much do quality 20” 451 carbon wheels weigh? A: Leading 451 carbon junior wheelsets typically weigh 500–700g (front) and 600–800g (rear). Lighter weight supports faster acceleration for youth riders. Q: What should I look for in a junior five-spoke carbon wheelset? A: Key factors: true 451 rim standard, low total system weight, proven tubeless compatibility, construction quality, and warranty support. Q: Is 451 better than 406 for junior competitive cycling? A: 451 offers increased tire diameter, enabling higher speeds and improved handling compared to 406, preferred for competitive youth events. Tested for consistent quality. Suitable for small to medium cycling brands, teams, and demanding young riders seeking performance and reliability in junior racing scenarios.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Carbon Bicycle Wheelset\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1.0png_aa6669ad-40dd-4f87-beed-4833eb089c93.png?v=1714357696\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1.00png_870d5858-3e87-4545-b93e-e88eeb27ab0a.png?v=1714357696\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"price\": \"560.00\",\n    \"priceCurrency\": \"USD\",\n    \"url\": \"https:\/\/bolacarbon.com\/products\/20-inch-451-26mm-tubeless-carbon-bicycle-five-spoke-wheel-for-young-rider-bola\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"https:\/\/bolacarbon.com\"\n    }\n  }\n}\n\u003c\/script\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"Default Title","offer_id":45178586562814,"sku":null,"price":460.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1.0png_aa6669ad-40dd-4f87-beed-4833eb089c93.png?v=1780298560"},{"product_id":"700c-34mm-wide-carbon-road-gravel-rim-45mm-50mm-wavy-profile-disc-brake-24-spoke-385-460g","title":"700c 34mm Wide Carbon Road \u0026 Gravel Rim | 45mm\u0026 50mm Wavy profile| Disc Brake | 24 Spoke | 385–460g","description":"\u003ch2\u003e700c 34mm Wide Carbon Disc Brake Rim — 45mm \u0026amp; 50mm Depth\u003c\/h2\u003e\u003cp\u003eA \u003cstrong\u003ewide-profile, high-modulus carbon fiber rim\u003c\/strong\u003e engineered for 700c disc brake road, gravel, and endurance builds. Available in 45mm and 50mm depths with a 34mm external width and 25mm internal width, this rim is compatible with tubeless and clincher tire setups. Weight options range from 460g (standard) down to 385g (extreme light), giving teams and individual builders precise weight-to-durability control.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Diameter\u003c\/td\u003e\n\u003ctd\u003e700c (ISO 622)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eUV Wave (hooked)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Depth\u003c\/td\u003e\n\u003ctd\u003e45mm \/ 50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Width\u003c\/td\u003e\n\u003ctd\u003e34mm (45mm depth) \/ 31mm (50mm depth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Width\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e539mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Count\u003c\/td\u003e\n\u003ctd\u003e24H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake Type\u003c\/td\u003e\n\u003ctd\u003eDisc brake only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction\u003c\/td\u003e\n\u003ctd\u003eFront: 7° \/ Rear: 5° \u0026amp; 7° (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e100–125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e120 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Balance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWeight Variants\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003cth\u003eWeight per Rim\u003c\/th\u003e\n\u003cth\u003eTolerance\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e460g\u003c\/td\u003e\n\u003ctd\u003e±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e425g\u003c\/td\u003e\n\u003ctd\u003e±10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e405g\u003c\/td\u003e\n\u003ctd\u003e±10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtreme Light\u003c\/td\u003e\n\u003ctd\u003e385g\u003c\/td\u003e\n\u003ctd\u003e±10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eNote: Lower weight grades use a more aggressive fiber layup schedule. For rider weights above 100 kg or rough gravel courses, the Standard or Superlight grade is recommended for additional structural margin.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eStructural Strength Ratings\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion Resistance:\u003c\/strong\u003e \u0026gt;50 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280 kg\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e45mm vs 50mm Depth — Which to Choose?\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e45mm depth\u003c\/strong\u003e (34mm external width) offers a better crosswind stability profile and is preferred for mixed-terrain gravel racing, climbing stages, and endurance road events where handling precision is critical. The \u003cstrong\u003e50mm depth\u003c\/strong\u003e (31mm external width) delivers greater aerodynamic efficiency on flat or rolling courses, making it a common choice for criterium, triathlon, and flat gran fondo applications. Both depths share identical internal width (25mm), spoke count (24H), and structural ratings.\u003c\/p\u003e\u003ch2\u003eTubeless \u0026amp; Disc Brake Compatibility\u003c\/h2\u003e\u003cp\u003eThe 25mm internal width accepts tire widths from \u003cstrong\u003e28mm to 50mm\u003c\/strong\u003e, accommodating tubeless-ready road tires (28–32mm), gravel tires (35–45mm), and light all-road tires. The disc-brake-only rim bed eliminates brake track wear, and the UV wave profile provides a consistent bead seat geometry for tubeless installation. No rim tape is required for tubeless setups when used with compatible valves and sealant.\u003c\/p\u003e\u003ch2\u003eCustomization Options\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eValve hole diameter: 6.5mm standard or custom\u003c\/li\u003e\n\u003cli\u003eSpoke hole diameter: 4.5mm standard or custom\u003c\/li\u003e\n\u003cli\u003eAssembly hole diameter: 7.5mm standard or custom\u003c\/li\u003e\n\u003cli\u003eNipple angle: Front 7°, Rear 5° \u0026amp; 7°, or custom offset\u003c\/li\u003e\n\u003cli\u003eLogo, decal, and color customization available for OEM and team orders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs a 34mm wide carbon rim suitable for gravel riding or only road cycling?\u003c\/h3\u003e\u003cp\u003eYes. The 25mm internal width of this rim comfortably accommodates gravel tires up to 45mm wide, making it well-suited for gravel endurance and mixed-surface racing. The wider internal channel improves tire casing support and reduces pinch flat risk compared to rims under 21mm internal width.\u003c\/p\u003e\u003ch3\u003eHow much weight can I save by choosing the extreme light (385g) grade over standard (460g)?\u003c\/h3\u003e\u003cp\u003eSwitching from the 460g standard to the 385g extreme light grade saves 75g per rim, or approximately 150g per wheelset. At typical road build weights, this is a measurable reduction. However, the extreme light layup has a tighter structural margin; it is best suited for riders under 75 kg on road-only surfaces.\u003c\/p\u003e\u003ch3\u003eWhat is the difference between 45mm and 50mm depth for climbing vs flat roads?\u003c\/h3\u003e\u003cp\u003eThe 45mm depth offers a lower aerodynamic drag penalty in crosswinds and a marginally lower rim weight, making it the preferred choice for climbing and technical courses. The 50mm depth provides greater aerodynamic advantage on flat or rolling terrain above approximately 38 km\/h. For a general-purpose disc brake build, the 45mm depth is the more versatile option.\u003c\/p\u003e\u003ch3\u003eWhat should I look for in a wide carbon rim for a tubeless disc brake setup?\u003c\/h3\u003e\u003cp\u003eKey parameters include: internal width ≥23mm for road tubeless or ≥25mm for gravel tubeless, a hooked or hookless bead seat profile, flatness tolerance ≤0.2mm for reliable tubeless seating, and a valve hole diameter compatible with your valve stem (6.5mm accommodates most standard road valves). This rim meets all four criteria.\u003c\/p\u003e\u003ch3\u003eDoes this rim support both clincher and tubeless tire systems?\u003c\/h3\u003e\u003cp\u003eYes. The UV wave hooked profile is compatible with both standard clincher tires and tubeless-ready tires. Tubeless installation requires a compatible tubeless valve and sealant; no additional rim tape is required due to the sealed bead channel design.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c 34mm wide carbon bike rim with 45mm and 50mm wavy 24 spoke disc brake,fat shape,superlight and ultra light even exteme light,Bola\",\n  \"description\": \"700c 34mm Wide Carbon Disc Brake Rim — 45mm \u0026amp; 50mm Depth A wide-profile, high-modulus carbon fiber rim engineered for 700c disc brake road, gravel, and endurance builds. Available in 45mm and 50mm depths with a 34mm external width and 25mm internal width, this rim is compatible with tubeless and clincher tire setups. Weight options range from 460g (standard) down to 385g (extreme light), giving teams and individual builders precise weight-to-durability control. Key Specifications Parameter Value Rim Diameter 700c (ISO 622) Rim Profile UV Wave (hooked) Available Depth 45mm \/ 50mm External Width 34mm (45mm depth) \/ 31mm (50mm depth) Internal Width 25mm ERD 539mm Spoke Count 24H Brake Type Disc brake only Valve Hole 6.5mm (customizable) Spoke Hole 4.5mm (customizable) Assembly Hole 7.5mm (customizable) Nipple Direction Front: 7° \/ Rear: 5° \u0026amp; 7° (customizable) Tire Pressure Range 100–125 psi Max Rider Weight 120 kg Flatness Tolerance \u0026lt;0.15mm Roundness Tolerance \u0026lt;0.3mm Dynamic Balance \u0026lt;3g Weight Variants Grade Weight per Rim Tolerance Standard 460g ±15g Superlight 425g ±10g Ultralight 405g ±10g Extreme Light 385g ±10g Note: Lower weight grades use a more aggressive fiber layup schedule. For rider weights above 100 kg or rough gravel courses, the Standard or Superlight grade is recommended for additional structural margin. Structural Strength Ratings Forward Compressive Strength: \u0026gt;300 kg Lateral Torsion Resistance: \u0026gt;50 kg Spoke Hole Tension: \u0026gt;280 kg 45mm vs 50mm Depth — Which to Choose? The 45mm depth (34mm external width) offers a better crosswind stability profile and is preferred for mixed-terrain gravel racing, climbing stages, and endurance road events where handling precision is critical. The 50mm depth (31mm external width) delivers greater aerodynamic efficiency on flat or rolling courses, making it a common choice for criterium, triathlon, and flat gran fondo applications. Both depths share identical internal width (25mm), spoke count (24H), and structural ratings. Tubeless \u0026amp; Disc Brake Compatibility The 25mm internal width accepts tire widths from 28mm to 50mm , accommodating tubeless-ready road tires (28–32mm), gravel tires (35–45mm), and light all-road tires. The disc-brake-only rim bed eliminates brake track wear, and the UV wave profile provides a consistent bead seat geometry for tubeless installation. No rim tape is required for tubeless setups when used with compatible valves and sealant. Customization Options Valve hole diameter: 6.5mm standard or custom Spoke hole diameter: 4.5mm standard or custom Assembly hole diameter: 7.5mm standard or custom Nipple angle: Front 7°, Rear 5° \u0026amp; 7°, or custom offset Logo, decal, and color customization available for OEM and team orders Frequently Asked Questions Is a 34mm wide carbon rim suitable for gravel riding or only road cycling? Yes. The 25mm internal width of this rim comfortably accommodates gravel tires up to 45mm wide, making it well-suited for gravel endurance and mixed-surface racing. The wider internal channel improves tire casing support and reduces pinch flat risk compared to rims under 21mm internal width. How much weight can I save by choosing the extreme light (385g) grade over standard (460g)? Switching from the 460g standard to the 385g extreme light grade saves 75g per rim, or approximately 150g per wheelset. At typical road build weights, this is a measurable reduction. However, the extreme light layup has a tighter structural margin; it is best suited for riders under 75 kg on road-only surfaces. What is the difference between 45mm and 50mm depth for climbing vs flat roads? The 45mm depth offers a lower aerodynamic drag penalty in crosswinds and a marginally lower rim weight, making it the preferred choice for climbing and technical courses. The 50mm depth provides greater aerodynamic advantage on flat or rolling terrain above approximately 38 km\/h. For a general-purpose disc brake build, the 45mm depth is the more versatile option. What should I look for in a wide carbon rim for a tubeless disc brake setup? Key parameters include: internal width ≥23mm for road tubeless or ≥25mm for gravel tubeless, a hooked or hookless bead seat profile, flatness tolerance ≤0.2mm for reliable tubeless seating, and a valve hole diameter compatible with your valve stem (6.5mm accommodates most standard road valves). This rim meets all four criteria. Does this rim support both clincher and tubeless tire systems? Yes. The UV wave hooked profile is compatible with both standard clincher tires and tubeless-ready tires. 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Key Specifications Specification Value Rim Size 700C Rim Profile UV Shape (hooked tubeless-compatible) Rim Height 40mm Outer Width 36mm Inner Width 30mm ERD 558mm Valve Hole Diameter 6.5mm (customizable) Spoke Hole Diameter 4.5mm (customizable) Nipple Direction (Front) 7° Nipple Direction (Rear) 5° \u0026amp; 7° (customizable) Min \/ Max Tire Pressure 100 \/ 125 psi Max Rider Weight 120 kg Weight Tiers Scheme Weight per Rim Standard 445 ± 15g Superlight 410 ± 10g Ultralight 385 ± 10g Extreme Light 365 ± 10g Note: Lighter weight tiers use reduced laminate schedules. For riders above 90 kg or high-torque sprint applications, the Standard or Superlight tier is recommended for optimal fatigue resistance. Structural Performance Data Forward Compressive Strength: \u0026gt;300 kg Lateral Torsion Resistance: \u0026gt;50 kg Spoke Hole Tension: \u0026gt;280 kg Dynamic Equilibrium: \u0026lt;3g imbalance Flatness Tolerance: \u0026lt;0.15mm Roundness Tolerance: \u0026lt;0.3mm Compatibility \u0026amp; Customization Tire Compatibility: Tubeless and clincher tires, 25c–50c recommended range Frame Compatibility: Fits standard 700C road, endurance, and gravel frames with minimum 40mm rim clearance Hook Type: Hooked UV profile — compatible with standard road tubeless tires (not hookless-only tires) Drill Options: Assembly hole, valve hole, and spoke hole diameters available in custom sizes on request Custom Branding: OEM\/private label available for cycling brands and professional teams Frequently Asked Questions Is a 30mm inner width carbon rim suitable for endurance road and gravel cycling? Yes. A 30mm internal width supports tire widths from 28c to 45c at optimal inflation volume, reducing rolling resistance and improving compliance on rough surfaces — well-suited to endurance road and light gravel use. Are 36mm wide carbon rims compatible with standard road bike frames? Most modern road and endurance frames with 40mm+ rim clearance accommodate a 36mm outer-width rim without contact. Always verify your frame's stated maximum tire\/rim clearance before ordering. What is the weight of an ultralight carbon road rim at this spec? The Ultralight tier of this rim weighs 385 ± 10g per rim. The Extreme Light option reaches 365 ± 10g. Both are achieved through selective carbon layup reduction; the Standard 445g tier is recommended for heavier riders or frequent training use. What makes this rim suitable for tubeless setup? The UV hooked bead profile seals tubeless tires securely within the 100–125 psi pressure range. 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(Bola)\u003c\/h2\u003e\u003cp\u003eBola's 700c carbon gravel rims deliver verified disc-brake performance in three weight classes — Normal (460g), Superlight (410g), and Ultralight (360g per rim) — with a 34mm outer \/ 25mm inner U-shape profile optimised for tubeless gravel tyre compatibility from 28c to 50c. Available in 35mm and 40mm heights to suit either all-day endurance riding or aerodynamic efficiency.\u003c\/p\u003e\u003ch2\u003eWho These Rims Are Designed For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompetitive gravel and cyclocross teams\u003c\/strong\u003e requiring sub-400g disc-specific rims without sacrificing structural integrity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall and medium cycling brands\u003c\/strong\u003e seeking OEM\/white-label rims with consistent, verifiable quality (three-year warranty)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndurance cyclists\u003c\/strong\u003e running wide tubeless setups who need a 25mm inner width for reduced rolling resistance and improved tyre volume\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRim Profile Options: 35mm vs. 40mm\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003e35mm Height\u003c\/th\u003e\n\u003cth\u003e40mm Height\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use Case\u003c\/td\u003e\n\u003ctd\u003eTechnical gravel, endurance, rough terrain\u003c\/td\u003e\n\u003ctd\u003eMixed-surface racing, aerodynamic efficiency\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e34mm\u003c\/td\u003e\n\u003ctd\u003e34mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e539mm\u003c\/td\u003e\n\u003ctd\u003e539mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Tyre Pressure\u003c\/td\u003e\n\u003ctd\u003e125 psi\u003c\/td\u003e\n\u003ctd\u003e125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Dia.\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customisable)\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFull Technical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Shape:\u003c\/strong\u003e U-shape (wider internal channel vs. V-shape; optimised for gravel tyre profiles)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Width:\u003c\/strong\u003e 34mm (variant: 31mm available)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Width:\u003c\/strong\u003e 25mm (tubeless-ready)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight per Rim:\u003c\/strong\u003e Normal 460±15g | Superlight 410±10g | Ultralight 360±10g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion:\u003c\/strong\u003e \u0026gt;50kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium:\u003c\/strong\u003e \u0026lt;3g imbalance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlatness Tolerance:\u003c\/strong\u003e \u0026lt;0.15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoundness Tolerance:\u003c\/strong\u003e \u0026lt;0.3mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssembly Hole Diameter:\u003c\/strong\u003e 7.5mm (customisable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Diameter:\u003c\/strong\u003e 4.5mm (customisable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNipple Direction:\u003c\/strong\u003e Front 7°, Rear 5° \u0026amp; 7° (customisable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTyre Pressure Range:\u003c\/strong\u003e 100–125 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Rider Weight:\u003c\/strong\u003e 120kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake Compatibility:\u003c\/strong\u003e Disc brake only\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy U-Shape Over V-Shape for Gravel?\u003c\/h2\u003e\u003cp\u003eThe U-shape profile maintains a consistent internal channel width of 25mm across the full bead-seat area. Compared to a V-shape rim of equivalent height, the U-profile reduces tyre deformation under cornering loads and supports a broader tyre volume range (typically 32c–50c), which is critical for mixed-surface gravel riding. V-shape rims of similar height typically offer 2–4mm narrower internal widths, increasing tyre sidewall tension and limiting tubeless bead retention reliability on rough terrain.\u003c\/p\u003e\u003ch2\u003eWeight Class Comparison\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eWeight Class\u003c\/th\u003e\n\u003cth\u003eWeight per Rim\u003c\/th\u003e\n\u003cth\u003eRecommended Use\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal\u003c\/td\u003e\n\u003ctd\u003e460±15g\u003c\/td\u003e\n\u003ctd\u003eTraining, endurance, heavier build tolerance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e410±10g\u003c\/td\u003e\n\u003ctd\u003eRace-day gravel, cyclocross\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e360±10g\u003c\/td\u003e\n\u003ctd\u003eCompetitive racing, weight-optimised builds (\u0026lt;120kg rider)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eNote: The 50g reduction from Normal to Ultralight (per rim) translates to 100g savings across a paired wheelset. Ultralight rims are recommended for riders under 100kg on non-technical terrain to maintain the rated structural tolerances above.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eCustomisation \u0026amp; OEM Services\u003c\/h2\u003e\u003cp\u003eAll hole diameters (assembly, valve, spoke) are available in custom dimensions. Nipple angle, drilling pattern, and branding options are offered for cycling brands and professional teams. Minimum order quantities and lead times are available on request. Three-year warranty included on all production runs.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Are these rims tubeless-compatible?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Yes. The 25mm inner width and U-shape profile are engineered for tubeless tyre fitment. A tubeless-ready rim tape and valve are required and sold separately.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Should I choose 35mm or 40mm height for gravel riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: 35mm is recommended for technical or mixed-surface gravel where vertical compliance and handling agility are priorities. The 40mm profile provides measurable aerodynamic advantage on faster, smoother gravel or mixed-road segments, with minimal additional weight penalty at this rim width.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What is the weight difference between Superlight and Ultralight versions?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: The Superlight weighs 410±10g per rim; the Ultralight weighs 360±10g per rim — a nominal 50g difference per rim, or approximately 100g for a full wheelset build.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What tyre widths are compatible with the 25mm inner width?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: A 25mm inner width is compatible with tyres from approximately 28c to 50c. ETRTO guidelines recommend a minimum tyre width of 28mm for a 25mm internal rim width to maintain safe bead retention.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Can these rims be used with rim brake systems?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: No. These rims are designed exclusively for disc brake drivetrains. There is no braking surface machined into the rim sidewall.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Super or ultra light carbon gravel bike rims with 700c 34mm outer wide 25mm inner wide UV shape 35mm and 40mm high wave aerodynamic for disc brake,Bola\",\n  \"description\": \"Ultralight Carbon Gravel Bike Rims — 700c, 34mm Wide, Disc Brake (Bola) Bola's 700c carbon gravel rims deliver verified disc-brake performance in three weight classes — Normal (460g), Superlight (410g), and Ultralight (360g per rim) — with a 34mm outer \/ 25mm inner U-shape profile optimised for tubeless gravel tyre compatibility from 28c to 50c. Available in 35mm and 40mm heights to suit either all-day endurance riding or aerodynamic efficiency. Who These Rims Are Designed For Competitive gravel and cyclocross teams requiring sub-400g disc-specific rims without sacrificing structural integrity Small and medium cycling brands seeking OEM\/white-label rims with consistent, verifiable quality (three-year warranty) Endurance cyclists running wide tubeless setups who need a 25mm inner width for reduced rolling resistance and improved tyre volume Rim Profile Options: 35mm vs. 40mm Specification 35mm Height 40mm Height Primary Use Case Technical gravel, endurance, rough terrain Mixed-surface racing, aerodynamic efficiency Outer Width 34mm 34mm Inner Width 25mm 25mm ERD 539mm 539mm Max Tyre Pressure 125 psi 125 psi Valve Hole Dia. 6.5mm (customisable) 6.5mm (customisable) Full Technical Specifications Rim Shape: U-shape (wider internal channel vs. V-shape; optimised for gravel tyre profiles) Outer Width: 34mm (variant: 31mm available) Inner Width: 25mm (tubeless-ready) Weight per Rim: Normal 460±15g | Superlight 410±10g | Ultralight 360±10g Forward Compressive Strength: \u0026gt;300kg Lateral Torsion: \u0026gt;50kg Spoke Hole Tension: \u0026gt;280kg Dynamic Equilibrium: \u0026lt;3g imbalance Flatness Tolerance: \u0026lt;0.15mm Roundness Tolerance: \u0026lt;0.3mm Assembly Hole Diameter: 7.5mm (customisable) Spoke Hole Diameter: 4.5mm (customisable) Nipple Direction: Front 7°, Rear 5° \u0026amp; 7° (customisable) Tyre Pressure Range: 100–125 psi Max Rider Weight: 120kg Brake Compatibility: Disc brake only Why U-Shape Over V-Shape for Gravel? The U-shape profile maintains a consistent internal channel width of 25mm across the full bead-seat area. Compared to a V-shape rim of equivalent height, the U-profile reduces tyre deformation under cornering loads and supports a broader tyre volume range (typically 32c–50c), which is critical for mixed-surface gravel riding. V-shape rims of similar height typically offer 2–4mm narrower internal widths, increasing tyre sidewall tension and limiting tubeless bead retention reliability on rough terrain. Weight Class Comparison Weight Class Weight per Rim Recommended Use Normal 460±15g Training, endurance, heavier build tolerance Superlight 410±10g Race-day gravel, cyclocross Ultralight 360±10g Competitive racing, weight-optimised builds (\u0026lt;120kg rider) Note: The 50g reduction from Normal to Ultralight (per rim) translates to 100g savings across a paired wheelset. Ultralight rims are recommended for riders under 100kg on non-technical terrain to maintain the rated structural tolerances above. Customisation \u0026amp; OEM Services All hole diameters (assembly, valve, spoke) are available in custom dimensions. Nipple angle, drilling pattern, and branding options are offered for cycling brands and professional teams. Minimum order quantities and lead times are available on request. Three-year warranty included on all production runs. Frequently Asked Questions Q: Are these rims tubeless-compatible? A: Yes. The 25mm inner width and U-shape profile are engineered for tubeless tyre fitment. A tubeless-ready rim tape and valve are required and sold separately. Q: Should I choose 35mm or 40mm height for gravel riding? A: 35mm is recommended for technical or mixed-surface gravel where vertical compliance and handling agility are priorities. 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Tubeless-ready construction supports tire pressures from 100 to 125 psi and accommodates riders up to 120 kg.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Size\u003c\/td\u003e\n\u003ctd\u003e700C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eWave Aero (U-shape base)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Height\u003c\/td\u003e\n\u003ctd\u003e60mm \/ 65mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e515mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Normal\u003c\/td\u003e\n\u003ctd\u003e535 ±15g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Superlight\u003c\/td\u003e\n\u003ctd\u003e485 ±15g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Ultralight\u003c\/td\u003e\n\u003ctd\u003e430 ±10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;280 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Equilibrium\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3g imbalance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly \/ Valve Hole Dia\u003c\/td\u003e\n\u003ctd\u003e7.5mm \/ 6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Dia\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction (Front)\u003c\/td\u003e\n\u003ctd\u003e7°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction (Rear)\u003c\/td\u003e\n\u003ctd\u003e5° and 7° (or customized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e100–125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e120 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWeight Tier Comparison\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eTier\u003c\/th\u003e\n\u003cth\u003eWeight per Rim\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal\u003c\/td\u003e\n\u003ctd\u003e535 ±15g\u003c\/td\u003e\n\u003ctd\u003eTraining, durability-focused builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e485 ±15g\u003c\/td\u003e\n\u003ctd\u003eEndurance racing, balanced weight\/stiffness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e430 ±10g\u003c\/td\u003e\n\u003ctd\u003eCriterium, climbing, weight-conscious race builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003e60mm vs 65mm Depth — Which Should You Choose?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e60mm:\u003c\/strong\u003e Lower crosswind sensitivity; suited to mixed-terrain road racing, gran fondo, and riders in variable wind conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e65mm:\u003c\/strong\u003e Greater aerodynamic advantage at speeds above 40 km\/h; preferred for triathlon, time trial, and flat-course racing where crosswind risk is managed.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWave Aero Profile — What It Means\u003c\/h2\u003e\u003cp\u003eThe wave aero (toroidal) rim wall creates a smoother airflow reattachment point compared to a flat-wall U-shape rim. This geometry reduces aerodynamic drag at yaw angles typically encountered during road and triathlon racing (5°–15° yaw). \u003cem\u003eNote: aerodynamic advantage is most measurable above 35–40 km\/h; at lower average speeds, weight savings from the Ultralight tier typically provide a greater performance return.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eTubeless Compatibility\u003c\/h2\u003e\u003cp\u003eThe 22mm inner width accepts tires from 25mm to 32mm in tubeless or clincher configuration. The rim bed, valve hole diameter (6.5mm, customizable), and assembly hole (7.5mm, customizable) are designed for standard tubeless valve stems and tape installation.\u003c\/p\u003e\u003ch2\u003eCustomization Options\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpoke hole diameter: standard 4.5mm or custom\u003c\/li\u003e\n\u003cli\u003eValve hole diameter: standard 6.5mm or custom\u003c\/li\u003e\n\u003cli\u003eAssembly hole diameter: standard 7.5mm or custom\u003c\/li\u003e\n\u003cli\u003eNipple angle: Front 7°; Rear 5°, 7°, or custom\u003c\/li\u003e\n\u003cli\u003eRim height: 60mm or 65mm\u003c\/li\u003e\n\u003cli\u003eWeight tier: Normal, Superlight, or Ultralight\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the actual weight of the ultralight version?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe Ultralight tier weighs 430 ±10g per rim (420–440g), verified per-unit at the factory before shipping.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre these rims tubeless-ready out of the box?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The rim bed is tubeless-compatible. You will need tubeless tape, a valve stem, and tubeless sealant, which are not included.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a 60mm or 65mm rim better for triathlon and time trial?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe 65mm depth offers greater aerodynamic benefit on flat, controlled courses. The 60mm depth is the more versatile choice if your event includes variable wind or slight elevation.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat tire widths are compatible with the 22mm inner width?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eETRTO guidelines recommend tires 1.4× to 2.4× the inner rim width. For a 22mm inner width, this translates to approximately 25mm–50mm tires; for road use, 25mm–32mm is the practical range.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the maximum rider weight?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe rim is rated for riders up to 120 kg combined system weight (rider + bike + gear).\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan spoke count and hole configuration be customized?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Contact Bola directly with your spoke count, lacing pattern, and nipple angle requirements before ordering.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat warranty does Bola offer?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eBola provides a three-year manufacturer's warranty covering manufacturing defects in materials and workmanship.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700C 28mm wide tubeless carbon bike rim 60mm and 65mm wave aero dynamic shape,ultra or super light optional Bola\",\n  \"description\": \"700C Carbon Road Bike Rim — Wave Aero Profile, 60mm \u0026amp; 65mm, 28mm Wide Tubeless The Bola 700C carbon rim delivers a wave-profile aerodynamic shape in 60mm and 65mm depths with a 28mm outer width, available in three weight tiers: Normal (535 ±15g) , Superlight (485 ±15g) , and Ultralight (430 ±10g) . Tubeless-ready construction supports tire pressures from 100 to 125 psi and accommodates riders up to 120 kg. Key Specifications Specification Value Rim Size 700C Rim Profile Wave Aero (U-shape base) Rim Height 60mm \/ 65mm Outer Width 28mm Inner Width 22mm ERD 515mm Weight — Normal 535 ±15g per rim Weight — Superlight 485 ±15g per rim Weight — Ultralight 430 ±10g per rim Forward Compressive Strength \u0026gt;300 kg Lateral Torsion \u0026gt;50 kg Spoke Hole Tension \u0026gt;280 kg Dynamic Equilibrium \u0026lt;3g imbalance Flatness Tolerance \u0026lt;0.15mm Roundness Tolerance \u0026lt;0.3mm Assembly \/ Valve Hole Dia 7.5mm \/ 6.5mm (customizable) Spoke Hole Dia 4.5mm (customizable) Nipple Direction (Front) 7° Nipple Direction (Rear) 5° and 7° (or customized) Tire Pressure Range 100–125 psi Max Rider Weight 120 kg Weight Tier Comparison Tier Weight per Rim Best For Normal 535 ±15g Training, durability-focused builds Superlight 485 ±15g Endurance racing, balanced weight\/stiffness Ultralight 430 ±10g Criterium, climbing, weight-conscious race builds 60mm vs 65mm Depth — Which Should You Choose? 60mm: Lower crosswind sensitivity; suited to mixed-terrain road racing, gran fondo, and riders in variable wind conditions. 65mm: Greater aerodynamic advantage at speeds above 40 km\/h; preferred for triathlon, time trial, and flat-course racing where crosswind risk is managed. Wave Aero Profile — What It Means The wave aero (toroidal) rim wall creates a smoother airflow reattachment point compared to a flat-wall U-shape rim. This geometry reduces aerodynamic drag at yaw angles typically encountered during road and triathlon racing (5°–15° yaw). Note: aerodynamic advantage is most measurable above 35–40 km\/h; at lower average speeds, weight savings from the Ultralight tier typically provide a greater performance return. Tubeless Compatibility The 22mm inner width accepts tires from 25mm to 32mm in tubeless or clincher configuration. The rim bed, valve hole diameter (6.5mm, customizable), and assembly hole (7.5mm, customizable) are designed for standard tubeless valve stems and tape installation. Customization Options Spoke hole diameter: standard 4.5mm or custom Valve hole diameter: standard 6.5mm or custom Assembly hole diameter: standard 7.5mm or custom Nipple angle: Front 7°; Rear 5°, 7°, or custom Rim height: 60mm or 65mm Weight tier: Normal, Superlight, or Ultralight Frequently Asked Questions What is the actual weight of the ultralight version? The Ultralight tier weighs 430 ±10g per rim (420–440g), verified per-unit at the factory before shipping. Are these rims tubeless-ready out of the box? Yes. The rim bed is tubeless-compatible. You will need tubeless tape, a valve stem, and tubeless sealant, which are not included. Is a 60mm or 65mm rim better for triathlon and time trial? The 65mm depth offers greater aerodynamic benefit on flat, controlled courses. The 60mm depth is the more versatile choice if your event includes variable wind or slight elevation. What tire widths are compatible with the 22mm inner width? ETRTO guidelines recommend tires 1.4× to 2.4× the inner rim width. For a 22mm inner width, this translates to approximately 25mm–50mm tires; for road use, 25mm–32mm is the practical range. What is the maximum rider weight? The rim is rated for riders up to 120 kg combined system weight (rider + bike + gear). Can spoke count and hole configuration be customized? Yes. Contact Bola directly with your spoke count, lacing pattern, and nipple angle requirements before ordering. What warranty does Bola offer? 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Disc-brake compatibility should be confirmed per SKU before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eOEM \u0026amp; Wholesale Ordering Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order:\u003c\/strong\u003e Contact Bola Sporting Goods for current MOQ by SKU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Time:\u003c\/strong\u003e 15 days from order confirmation for small batch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Options:\u003c\/strong\u003e Brand colors, logo decals, and packaging customization available on request.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assurance:\u003c\/strong\u003e Each rim undergoes internal quality inspection prior to shipment. Contact us for testing protocol documentation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eAll specifications listed are reference values. Contact Bola Sporting Goods Co. Limited directly to confirm final specs, pricing tiers, and customization options for your order.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the minimum order quantity for these carbon tubular bike rims?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo MOQ request. Contact Bola directly with your target volume to receive a tailored quote and lead time confirmation.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre tubular rims better than clincher for road racing?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eTubeless rims are preferred in competitive road racing for their lower rolling resistance, lighter system weight, and ability to run lower pressures without pinch flat risk. 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Available in 28mm, 30mm, 34mm, and 36mm depths with multiple carbon fiber grades (T700, T800, T1000) and weave finishes (UD, 3K, 12K, Twill, Marble, Paintless). Designed for road racing, endurance cycling, and premium OEM brand programs. Backed by a 3-year manufacturer warranty from Bola.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Diameter\u003c\/td\u003e\n\u003ctd\u003e700c (ETRTO 622mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Depths\u003c\/td\u003e\n\u003ctd\u003e28mm, 30mm, 34mm, 36mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eUV Shape, Wave, Standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon Fiber Grade\u003c\/td\u003e\n\u003ctd\u003eT700, T800, T1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeave Finish\u003c\/td\u003e\n\u003ctd\u003eUD, 3K, 12K, Twill, Marble, Paintless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTubeless, Clincher\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;280 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Balance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction\u003c\/td\u003e\n\u003ctd\u003eFront: 7° \/ Rear: 5° \u0026amp; 7° (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e100–125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 years (Bola)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eCarbon Fiber Grade Comparison\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003cth\u003eTensile Modulus\u003c\/th\u003e\n\u003cth\u003eBest Use Case\u003c\/th\u003e\n\u003cth\u003eTrade-off\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eT700\u003c\/td\u003e\n\u003ctd\u003e~230 GPa\u003c\/td\u003e\n\u003ctd\u003eEndurance, training, OEM value builds\u003c\/td\u003e\n\u003ctd\u003eSlightly heavier than T800\/T1000; more cost-effective\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT800\u003c\/td\u003e\n\u003ctd\u003e~294 GPa\u003c\/td\u003e\n\u003ctd\u003eCompetitive road racing, gran fondo\u003c\/td\u003e\n\u003ctd\u003eBalanced stiffness-to-weight; mid-range cost\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT1000\u003c\/td\u003e\n\u003ctd\u003e~294 GPa, higher strength\u003c\/td\u003e\n\u003ctd\u003ePro racing, ultra-lightweight builds\u003c\/td\u003e\n\u003ctd\u003eHigher material cost; premium weight savings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWeave Pattern Guide\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003cth\u003eVisual Character\u003c\/th\u003e\n\u003cth\u003eCommon Application\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUD (Unidirectional)\u003c\/td\u003e\n\u003ctd\u003eSmooth matte, no visible weave\u003c\/td\u003e\n\u003ctd\u003eAerodynamic race builds, clean OEM branding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3K\u003c\/td\u003e\n\u003ctd\u003eFine tight weave, classic carbon look\u003c\/td\u003e\n\u003ctd\u003ePerformance + aesthetics balance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12K\u003c\/td\u003e\n\u003ctd\u003eBroad weave pattern, bold texture\u003c\/td\u003e\n\u003ctd\u003eDecorative, lifestyle, urban premium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTwill\u003c\/td\u003e\n\u003ctd\u003eDiagonal pattern\u003c\/td\u003e\n\u003ctd\u003eCustom brand differentiation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarble \/ Paintless\u003c\/td\u003e\n\u003ctd\u003eUnique surface finish\u003c\/td\u003e\n\u003ctd\u003eLimited editions, brand-exclusive colorways\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eUse-Case Fit\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoad Racing:\u003c\/strong\u003e 34mm or 36mm depth in T800 or T1000 UD finish delivers aerodynamic gain with \u0026lt;3 g dynamic balance for consistent wheel rotation at speed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndurance \u0026amp; Gran Fondo:\u003c\/strong\u003e 28mm or 30mm depth in T700 reduces road vibration transfer while staying within the 100–125 psi tubeless pressure range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Brand Programs:\u003c\/strong\u003e Custom spoke hole count, nipple direction, valve diameter, and surface finish available for small-to-medium cycling brands building proprietary wheelsets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Team Supply:\u003c\/strong\u003e T1000 builds with \u0026lt;0.15 mm flatness tolerance and \u0026lt;0.3 mm roundness tolerance meet team-level quality thresholds for race-day reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOEM \u0026amp; Customization Options\u003c\/h2\u003e\u003cp\u003eAll hole dimensions (assembly, valve, spoke) are customizable to specification. New mold orders are available at a 50% tooling discount. Minimum order quantities apply — contact for OEM pricing and lead times. Over a decade of manufacturing experience supplying brands across Europe and North America.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between T700, T800, and T1000 carbon for bike rims?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eT700 offers ~230 GPa tensile modulus — durable and cost-effective for training or OEM value builds. T800 reaches ~294 GPa with a better stiffness-to-weight ratio for competitive road use. T1000 shares T800's modulus but with higher tensile strength, enabling thinner layups and lighter rims — preferred for professional racing where every gram matters.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between UD, 3K, and 12K carbon weave?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eUD (unidirectional) has no visible weave — fibers run in one direction for a clean aerodynamic surface. 3K weave has a tight, fine pattern widely associated with performance carbon aesthetics. 12K has a broader, bolder weave suited to premium lifestyle or decorative applications. All three deliver equivalent structural performance at the same fiber grade.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre these rims tubeless compatible?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The rim bed is designed for tubeless setup with a 6.5 mm valve hole diameter (customizable). Tire pressure range is 100–125 psi with tubeless tape and valve installation by the builder.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat dynamic balance specification should I expect for competitive cycling?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDynamic balance is held to \u0026lt;3 g on all rims, which minimizes rotational vibration at high cadence and speed. For reference, sub-5 g is the accepted threshold for competition-grade wheels.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan I order custom spoke hole counts or nipple angles?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Spoke hole diameter (standard 4.5 mm), nipple direction (front 7°, rear 5° or 7°), and assembly hole diameter (standard 7.5 mm) are all customizable for OEM and team orders.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat warranty is provided?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eBola provides a 3-year manufacturer warranty covering structural defects under normal cycling use conditions. Warranty does not cover crash damage or improper installation.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Carbon bike rim OEM Factory for 700c carbon rim of 28mm,30mm,34mm,36mm,UV shape,Wave,ultra and extreme light,T700,T800,T1000,UD,3K,12K,Twill,Marble,Paintless etc,new mold half discount,Bola three years warranty\",\n  \"description\": \"700c OEM Carbon Bicycle Rim — Tubeless-Ready, Multi-Depth, Custom Weave A tubeless-compatible 700c carbon fiber rim engineered for OEM and custom orders. Available in 28mm, 30mm, 34mm, and 36mm depths with multiple carbon fiber grades (T700, T800, T1000) and weave finishes (UD, 3K, 12K, Twill, Marble, Paintless). Designed for road racing, endurance cycling, and premium OEM brand programs. Backed by a 3-year manufacturer warranty from Bola. Technical Specifications Parameter Value Rim Diameter 700c (ETRTO 622mm) Available Depths 28mm, 30mm, 34mm, 36mm Rim Profile UV Shape, Wave, Standard Carbon Fiber Grade T700, T800, T1000 Weave Finish UD, 3K, 12K, Twill, Marble, Paintless Compatibility Tubeless, Clincher Forward Compressive Strength \u0026gt;300 kg Lateral Torsion Resistance \u0026gt;50 kg Spoke Hole Tension \u0026gt;280 kg Dynamic Balance \u0026lt;3 g Flatness Tolerance \u0026lt;0.15 mm Roundness Tolerance \u0026lt;0.3 mm Assembly Hole Diameter 7.5 mm (customizable) Valve Hole Diameter 6.5 mm (customizable) Spoke Hole Diameter 4.5 mm (customizable) Nipple Direction Front: 7° \/ Rear: 5° \u0026amp; 7° (customizable) Tire Pressure Range 100–125 psi Max Rider Weight 100 kg Warranty 3 years (Bola) Carbon Fiber Grade Comparison Grade Tensile Modulus Best Use Case Trade-off T700 ~230 GPa Endurance, training, OEM value builds Slightly heavier than T800\/T1000; more cost-effective T800 ~294 GPa Competitive road racing, gran fondo Balanced stiffness-to-weight; mid-range cost T1000 ~294 GPa, higher strength Pro racing, ultra-lightweight builds Higher material cost; premium weight savings Weave Pattern Guide Finish Visual Character Common Application UD (Unidirectional) Smooth matte, no visible weave Aerodynamic race builds, clean OEM branding 3K Fine tight weave, classic carbon look Performance + aesthetics balance 12K Broad weave pattern, bold texture Decorative, lifestyle, urban premium Twill Diagonal pattern Custom brand differentiation Marble \/ Paintless Unique surface finish Limited editions, brand-exclusive colorways Use-Case Fit Road Racing: 34mm or 36mm depth in T800 or T1000 UD finish delivers aerodynamic gain with \u0026lt;3 g dynamic balance for consistent wheel rotation at speed. Endurance \u0026amp; Gran Fondo: 28mm or 30mm depth in T700 reduces road vibration transfer while staying within the 100–125 psi tubeless pressure range. OEM Brand Programs: Custom spoke hole count, nipple direction, valve diameter, and surface finish available for small-to-medium cycling brands building proprietary wheelsets. Professional Team Supply: T1000 builds with \u0026lt;0.15 mm flatness tolerance and \u0026lt;0.3 mm roundness tolerance meet team-level quality thresholds for race-day reliability. OEM \u0026amp; Customization Options All hole dimensions (assembly, valve, spoke) are customizable to specification. New mold orders are available at a 50% tooling discount. Minimum order quantities apply — contact for OEM pricing and lead times. Over a decade of manufacturing experience supplying brands across Europe and North America. Frequently Asked Questions What is the difference between T700, T800, and T1000 carbon for bike rims? T700 offers ~230 GPa tensile modulus — durable and cost-effective for training or OEM value builds. T800 reaches ~294 GPa with a better stiffness-to-weight ratio for competitive road use. T1000 shares T800's modulus but with higher tensile strength, enabling thinner layups and lighter rims — preferred for professional racing where every gram matters. What is the difference between UD, 3K, and 12K carbon weave? UD (unidirectional) has no visible weave — fibers run in one direction for a clean aerodynamic surface. 3K weave has a tight, fine pattern widely associated with performance carbon aesthetics. 12K has a broader, bolder weave suited to premium lifestyle or decorative applications. All three deliver equivalent structural performance at the same fiber grade. Are these rims tubeless compatible? Yes. The rim bed is designed for tubeless setup with a 6.5 mm valve hole diameter (customizable). Tire pressure range is 100–125 psi with tubeless tape and valve installation by the builder. What dynamic balance specification should I expect for competitive cycling? Dynamic balance is held to \u0026lt;3 g on all rims, which minimizes rotational vibration at high cadence and speed. For reference, sub-5 g is the accepted threshold for competition-grade wheels. Can I order custom spoke hole counts or nipple angles? Yes. Spoke hole diameter (standard 4.5 mm), nipple direction (front 7°, rear 5° or 7°), and assembly hole diameter (standard 7.5 mm) are all customizable for OEM and team orders. What warranty is provided? Bola provides a 3-year manufacturer warranty covering structural defects under normal cycling use conditions. Warranty does not cover crash damage or improper installation.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Tubeless\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/products\/tubeless_2d236823-c069-4581-9a8b-1fc9dd7a0b4b.jpg?v=1713256464\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/products\/surface_f1230322-3ddf-4fd0-b237-7adb3e4ce7e9.jpg?v=1713256464\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/products\/redbola_8887e641-3de0-41c4-a66e-78e20cb4c614.jpg?v=1713256464\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/products\/whitebola_b4d67109-868c-42a8-b0df-fde348a22fa0.jpg?v=1713256464\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/products\/yellowbola_fc7a6a6f-184a-49ca-9fe0-5882f00cffe8.jpg?v=1713256464\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"price\": \"100.00\",\n    \"priceCurrency\": \"USD\",\n    \"url\": \"https:\/\/bolacarbon.com\/products\/carbon-bike-rim-oem-factory-for-700c-carbon-rim-of-28mm-30mm-34mm-36mm-uv-shape-wave-ultra-and-extreme-light-t700-t800-t1000-ud-3k-12k-twill-marble-paintless-etc-new-mold-half-discount-bola-three-years-warranty\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"https:\/\/bolacarbon.com\"\n    }\n  }\n}\n\u003c\/script\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"Default Title","offer_id":45920604127486,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/products\/tubeless_2d236823-c069-4581-9a8b-1fc9dd7a0b4b.jpg?v=1780298564"},{"product_id":"700c-40mm-carbon-road-rim-30mm-or-34mm-wide-23mm-inner-width-tubeless-ready-bola","title":"700c 40mm Carbon Road Rim – 30mm or 34mm Wide, 23mm Inner Width, Tubeless Ready | Bola","description":"\u003ch2\u003e700c 40mm Carbon Road Rim – 30mm or 34mm Outer Width, 23mm Inner Width\u003c\/h2\u003e\u003cp\u003eThe Bola 40mm carbon road rim delivers a verified weight range of 380–430g per rim across three build grades, a 23mm inner width for compatibility with 25–32mm road and gravel tires, and a UV-cured resin finish. Available in 30mm and 34mm outer widths, this rim is designed for competitive road racing, endurance cycling, and OEM partnerships with small to medium cycling brands and professional teams.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Diameter\u003c\/td\u003e\n\u003ctd\u003e700c (ISO 622mm BSD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfile Height\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e30mm or 34mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e23mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e558mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU \/ UV profile (hookless-compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Angle (Front)\u003c\/td\u003e\n\u003ctd\u003e7°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Angle (Rear)\u003c\/td\u003e\n\u003ctd\u003e5° or 7° (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin \/ Max Tire Pressure\u003c\/td\u003e\n\u003ctd\u003e100 \/ 125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRider Weight Limit\u003c\/td\u003e\n\u003ctd\u003e≤120 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWeight Grade Comparison\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003cth\u003eWeight per Rim\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e430 ±15g\u003c\/td\u003e\n\u003ctd\u003eTraining, club racing, OEM builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e400 ±10g\u003c\/td\u003e\n\u003ctd\u003eEndurance racing, gran fondo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e380 ±10g\u003c\/td\u003e\n\u003ctd\u003eRoad criterium, climbing-focused race builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eStructural Strength Testing\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion Resistance:\u003c\/strong\u003e \u0026gt;50 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium (imbalance):\u003c\/strong\u003e \u0026lt;3g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlatness tolerance:\u003c\/strong\u003e \u0026lt;0.15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoundness tolerance:\u003c\/strong\u003e \u0026lt;0.3mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e30mm vs. 34mm Outer Width – Which Should You Choose?\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e34mm outer width\u003c\/strong\u003e provides a wider tire-to-rim interface, improving aerodynamic performance when paired with 28–32mm tires by reducing the turbulent 'light bulb' effect at the tire shoulder. The \u003cstrong\u003e30mm outer width\u003c\/strong\u003e suits riders prioritizing lower rotational weight and compatibility with narrower 25–28mm tire setups. Both widths share the same 23mm inner width and 40mm profile, so wheel stiffness and spoke tension behavior remain comparable across both configurations.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eNote: The ultralight grade (380 ±10g) achieves its weight reduction through selective carbon layup optimization. Riders exceeding 90 kg or competing on rough road surfaces may prefer the standard or superlight grade for additional fatigue resistance.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eCustomization \u0026amp; OEM Availability\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpoke hole count: customizable per order\u003c\/li\u003e\n\u003cli\u003eHole diameters (valve, spoke, assembly): customizable\u003c\/li\u003e\n\u003cli\u003eNipple angle: front 7°, rear 5° or 7°, or custom specification\u003c\/li\u003e\n\u003cli\u003ePrivate label and OEM branding available for cycling brands and professional teams\u003c\/li\u003e\n\u003cli\u003eThree-year warranty included on all grades\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTire type:\u003c\/strong\u003e Clincher, tubeless-ready (with compatible tape and valves)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended tire width:\u003c\/strong\u003e 25–32mm (700c)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrivetrain compatibility:\u003c\/strong\u003e Compatible with all standard road groupsets via cassette body selection at wheel build stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake type:\u003c\/strong\u003e Disc brake only (no braking surface machined)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eAre these carbon rims tubeless compatible?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The 23mm inner width and U\/UV rim shape are tubeless-ready when used with appropriate rim tape (recommend 25mm width) and tubeless valve stems with a 6.5mm hole diameter. Maximum tire pressure is 125 psi.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between the superlight and ultralight grades?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe superlight grade (400 ±10g) uses a balanced carbon layup suitable for most competitive road and endurance applications. The ultralight grade (380 ±10g) reduces weight by approximately 20g per rim through a refined layup schedule. Both pass the same structural tests; however, the ultralight grade is recommended for riders under 85 kg on smooth road surfaces.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a 34mm wide rim better than 30mm for road aerodynamics?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFor tires 28mm and wider, the 34mm outer width reduces the tire-rim shoulder gap, which wind tunnel data from rim manufacturers consistently shows improves aerodynamic efficiency above 35 km\/h. For 25mm tires, the 30mm outer width maintains a better aerodynamic profile ratio.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat tire pressure should I use with these rims?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe rated range is 100–125 psi. For tubeless setups with 28mm tires, most riders perform well at 70–90 psi, though the structural rating remains 100 psi minimum for clincher use. Always verify with your tire manufacturer's pressure guidelines.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan I order custom spoke hole counts or private-label branding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Spoke hole count, hole diameters, nipple angles, and OEM\/private-label branding are all available as custom configurations. Contact us with your technical drawing or specification sheet for a production quote.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c super or ultra light carbon cycling rim 40mm profile 34mm or 30mm outer wide 23mm inner wide,fat body,Bola\",\n  \"description\": \"700c 40mm Carbon Road Rim – 30mm or 34mm Outer Width, 23mm Inner Width The Bola 40mm carbon road rim delivers a verified weight range of 380–430g per rim across three build grades, a 23mm inner width for compatibility with 25–32mm road and gravel tires, and a UV-cured resin finish. Available in 30mm and 34mm outer widths, this rim is designed for competitive road racing, endurance cycling, and OEM partnerships with small to medium cycling brands and professional teams. Key Specifications Specification Value Rim Diameter 700c (ISO 622mm BSD) Profile Height 40mm Outer Width 30mm or 34mm Inner Width 23mm ERD 558mm Rim Shape U \/ UV profile (hookless-compatible) Valve Hole Diameter 6.5mm (customizable) Spoke Hole Diameter 4.5mm (customizable) Assembly Hole Diameter 7.5mm (customizable) Nipple Angle (Front) 7° Nipple Angle (Rear) 5° or 7° (customizable) Min \/ Max Tire Pressure 100 \/ 125 psi Rider Weight Limit ≤120 kg Weight Grade Comparison Grade Weight per Rim Best For Standard 430 ±15g Training, club racing, OEM builds Superlight 400 ±10g Endurance racing, gran fondo Ultralight 380 ±10g Road criterium, climbing-focused race builds Structural Strength Testing Forward Compressive Strength: \u0026gt;300 kg Lateral Torsion Resistance: \u0026gt;50 kg Spoke Hole Tension: \u0026gt;280 kg Dynamic Equilibrium (imbalance): \u0026lt;3g Flatness tolerance: \u0026lt;0.15mm Roundness tolerance: \u0026lt;0.3mm 30mm vs. 34mm Outer Width – Which Should You Choose? The 34mm outer width provides a wider tire-to-rim interface, improving aerodynamic performance when paired with 28–32mm tires by reducing the turbulent 'light bulb' effect at the tire shoulder. The 30mm outer width suits riders prioritizing lower rotational weight and compatibility with narrower 25–28mm tire setups. Both widths share the same 23mm inner width and 40mm profile, so wheel stiffness and spoke tension behavior remain comparable across both configurations. Note: The ultralight grade (380 ±10g) achieves its weight reduction through selective carbon layup optimization. Riders exceeding 90 kg or competing on rough road surfaces may prefer the standard or superlight grade for additional fatigue resistance. Customization \u0026amp; OEM Availability Spoke hole count: customizable per order Hole diameters (valve, spoke, assembly): customizable Nipple angle: front 7°, rear 5° or 7°, or custom specification Private label and OEM branding available for cycling brands and professional teams Three-year warranty included on all grades Compatibility Tire type: Clincher, tubeless-ready (with compatible tape and valves) Recommended tire width: 25–32mm (700c) Drivetrain compatibility: Compatible with all standard road groupsets via cassette body selection at wheel build stage Brake type: Disc brake only (no braking surface machined) Frequently Asked Questions Are these carbon rims tubeless compatible? Yes. The 23mm inner width and U\/UV rim shape are tubeless-ready when used with appropriate rim tape (recommend 25mm width) and tubeless valve stems with a 6.5mm hole diameter. Maximum tire pressure is 125 psi. What is the difference between the superlight and ultralight grades? The superlight grade (400 ±10g) uses a balanced carbon layup suitable for most competitive road and endurance applications. The ultralight grade (380 ±10g) reduces weight by approximately 20g per rim through a refined layup schedule. Both pass the same structural tests; however, the ultralight grade is recommended for riders under 85 kg on smooth road surfaces. Is a 34mm wide rim better than 30mm for road aerodynamics? For tires 28mm and wider, the 34mm outer width reduces the tire-rim shoulder gap, which wind tunnel data from rim manufacturers consistently shows improves aerodynamic efficiency above 35 km\/h. For 25mm tires, the 30mm outer width maintains a better aerodynamic profile ratio. What tire pressure should I use with these rims? The rated range is 100–125 psi. For tubeless setups with 28mm tires, most riders perform well at 70–90 psi, though the structural rating remains 100 psi minimum for clincher use. Always verify with your tire manufacturer's pressure guidelines. Can I order custom spoke hole counts or private-label branding? Yes. Spoke hole count, hole diameters, nipple angles, and OEM\/private-label branding are all available as custom configurations. 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Most athletes and coaches target 60–90mm depth for time-trial and triathlon disciplines where sustained speed outweighs handling variability. Riders in consistently windy conditions may prefer 60–65mm for a better crosswind margin.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs the 34mm wide carbon rim better than 30mm for triathlon aerodynamics?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe 34mm outer width pairs best with 25–28mm tyres, aligning the rim-to-tyre transition for reduced aerodynamic drag. The 30mm option suits 23–25mm tyres and saves approximately 30 g per rim. For most modern triathlon setups running 25mm+ tyres, the 34mm profile is the recommended choice.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow heavy should a 700c carbon rim be for a triathlon wheelset?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eCompetitive 80mm carbon rims typically weigh between 560 g and 650 g. At 580–610 g, this rim sits within the performance bracket, balancing aerodynamic depth with rotational mass suitable for Ironman and Olympic-distance racing.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat does UV shape mean compared to a standard box-section rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eUV shape describes a toroidal (rounded) outer rim profile. Unlike a squared box-section, the curved surface improves airflow re-attachment at varied yaw angles, reducing aerodynamic drag in crosswind conditions common on open triathlon courses.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre these rims compatible with tubeless tyres?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The 23mm inner width and 6.5mm valve hole are compatible with tubeless and tubeless-ready tyre systems. Confirm hook or hookless compatibility with your specific tyre brand before assembly.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c carbon bike rim 80mm deep 34mm outer wide 23mm inner wide for ironman,triathlon,UV shape,Bola\",\n  \"description\": \"80mm Deep 700c Carbon Rim for Triathlon, Ironman \u0026amp; Competitive Time Trial The 80mm deep, 34mm outer-wide UV-shape carbon rim delivers a measured aerodynamic profile purpose-built for flat to rolling triathlon and Ironman courses. Available in two outer widths — 34mm and 30mm — with a 23mm inner width optimised for 25–28mm tubeless or clincher tyres. Weight runs 580–610 g per rim (±15 g tolerance), competitive with comparable aero rims in the 560–620 g range. Key Specifications Parameter Value Wheel Size 700c (ISO 622) Rim Shape UV (toroidal) profile Rim Depth 80 mm Outer Width 34 mm \/ 30 mm Inner Width 23 mm ERD 478 mm Weight per rim 580 g (30 mm) \/ 610 g (34 mm) ±15 g Max Rider Weight 120 kg Tyre Pressure Range 100–125 psi Valve Hole 6.5 mm (customisable) Spoke Hole 4.5 mm (customisable) Assembly Hole 7.5 mm (customisable) Nipple Angle (Front) 7° Nipple Angle (Rear) 5° \/ 7° or custom Flatness (lateral runout) \u0026lt;0.15 mm Roundness (radial runout) \u0026lt;0.3 mm Dynamic Balance \u0026lt;3 g Structural Integrity \u0026amp; Load Testing Forward Compressive Strength: \u0026gt;300 kg Lateral Torsion Resistance: \u0026gt;50 kg Spoke Hole Tension: \u0026gt;280 kg Each rim is individually tested for flatness, roundness, and spoke-hole tension before dispatch, reflecting a manufacturing process refined over a decade of supplying professional cycling teams and OEM brands across Europe and North America. UV Shape vs. Toroidal — What It Means for Racing The UV (also referred to as toroidal or U-V) profile features a rounded outer edge that smooths airflow re-attachment at yaw angles common in open-road racing (5°–15°). Compared to a traditional box-section rim, the UV shape reduces measured drag at crosswind yaw. The 34mm outer width further widens the tyre-to-rim interface, reducing tyre-induced turbulence. Trade-off note: at 80mm depth, side-wind handling demands increase in gusting conditions above 30 km\/h crosswinds — a factor to consider for lighter riders (\u0026lt;65 kg) in exposed Ironman courses. Customisation Options Hole diameters (valve, spoke, assembly) available in custom sizes Nipple direction configurable per axle position Compatible with tubeless, clincher, and tubular setups OEM branding and colourway available for team and brand orders Frequently Asked Questions What rim depth is best for an Ironman bike build? For flat to moderately rolling Ironman courses, an 80mm deep rim offers a strong aerodynamic return. Most athletes and coaches target 60–90mm depth for time-trial and triathlon disciplines where sustained speed outweighs handling variability. Riders in consistently windy conditions may prefer 60–65mm for a better crosswind margin. Is the 34mm wide carbon rim better than 30mm for triathlon aerodynamics? The 34mm outer width pairs best with 25–28mm tyres, aligning the rim-to-tyre transition for reduced aerodynamic drag. The 30mm option suits 23–25mm tyres and saves approximately 30 g per rim. For most modern triathlon setups running 25mm+ tyres, the 34mm profile is the recommended choice. How heavy should a 700c carbon rim be for a triathlon wheelset? Competitive 80mm carbon rims typically weigh between 560 g and 650 g. At 580–610 g, this rim sits within the performance bracket, balancing aerodynamic depth with rotational mass suitable for Ironman and Olympic-distance racing. 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Available in 40mm and 45mm depths, with a 25mm inner width optimized for 28–32mm tires, it is suited for competitive road racing, endurance cycling, and premium custom wheelset builds.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003e40mm Variant\u003c\/th\u003e\n\u003cth\u003e45mm Variant\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Height\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003ctd\u003e45mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e34mm\u003c\/td\u003e\n\u003ctd\u003e31mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e549mm\u003c\/td\u003e\n\u003ctd\u003e549mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Count\u003c\/td\u003e\n\u003ctd\u003e24H\u003c\/td\u003e\n\u003ctd\u003e24H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake Type\u003c\/td\u003e\n\u003ctd\u003eDisc Brake\u003c\/td\u003e\n\u003ctd\u003eDisc Brake\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customizable)\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction (Front)\u003c\/td\u003e\n\u003ctd\u003e7°\u003c\/td\u003e\n\u003ctd\u003e7°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction (Rear)\u003c\/td\u003e\n\u003ctd\u003e5° \u0026amp; 7° (customizable)\u003c\/td\u003e\n\u003ctd\u003e5° \u0026amp; 7° (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e100–125 psi\u003c\/td\u003e\n\u003ctd\u003e100–125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e120 kg\u003c\/td\u003e\n\u003ctd\u003e120 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWeight Options\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003cth\u003eWeight per Rim\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e450 ± 15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e420 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e395 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtreme Light\u003c\/td\u003e\n\u003ctd\u003e375 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eStructural Performance Data\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion Resistance:\u003c\/strong\u003e \u0026gt;50 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium:\u003c\/strong\u003e \u0026lt;3g imbalance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlatness Tolerance:\u003c\/strong\u003e \u0026lt;0.15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoundness Tolerance:\u003c\/strong\u003e \u0026lt;0.3mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Choose the Bola UV Profile Rim?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Inner Profile:\u003c\/strong\u003e The 25mm inner width accommodates modern 28–32mm road and gravel tires, improving air volume, rolling resistance, and rider comfort compared to traditional 19–21mm inner-width rims.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Depth Availability:\u003c\/strong\u003e The 40mm depth offers a balanced all-round ride with lower crosswind sensitivity; the 45mm depth increases aerodynamic efficiency for flat and rolling terrain at the cost of marginally higher wind sensitivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Construction:\u003c\/strong\u003e The Extreme Light grade at 375 ± 10g per rim is competitive for race-category carbon rims in this depth class. Note: lighter grades involve tighter layup tolerances and are recommended for riders under 80 kg and race-day use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM \u0026amp; Custom-Build Ready:\u003c\/strong\u003e Hole diameters, nipple angles, and spoke counts are customizable for brand-label and team-order builds. Minimum order quantities available on request.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc Brake Optimized:\u003c\/strong\u003e Braking track is not present; the rim is designed exclusively for disc brake drivetrains, eliminating heat stress at the braking surface common in rim-brake carbon rims.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTradeoffs to Consider\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThe 24-spoke lacing pattern reduces weight but requires precise tensioning during build. It is not recommended for riders above 100 kg without upgrading to the Standard weight grade.\u003c\/li\u003e\n\u003cli\u003eThe 45mm depth increases aerodynamic drag sensitivity in crosswinds above approximately 30 km\/h lateral component; the 40mm depth is the more versatile option for mixed-terrain endurance use.\u003c\/li\u003e\n\u003cli\u003eExtreme Light grade rims are optimized for race-day performance and may exhibit reduced fatigue life under high-frequency cobblestone or gravel loads compared to the Standard grade.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the best rim depth for endurance road cycling — 40mm or 45mm?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFor endurance cycling involving variable terrain and wind exposure, the 40mm depth is recommended. It offers a better crosswind stability profile while still delivering aerodynamic advantage over sub-35mm rims. The 45mm depth is better suited to flat road racing or time-trial segments where wind conditions are controlled.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a 25mm inner wide carbon rim better for endurance or race cycling?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA 25mm inner width supports a wider range of tire volumes (28–32mm road tires) than traditional 19–21mm rims, making it well-suited for both endurance and race applications. For race use, pairing with a 28mm tire at 90–100 psi reduces rolling resistance. For endurance, a 30–32mm tire at 80–90 psi improves comfort and traction.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre 24-spoke carbon rims strong enough for everyday road cycling?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, for riders under 100 kg riding on paved surfaces. The spoke hole tension rating of \u0026gt;280 kg per hole and forward compressive strength of \u0026gt;300 kg ensure structural integrity under typical road loads. For heavier riders or frequent rough-road use, the Standard weight grade (450 ± 15g) is recommended over the Extreme Light variant.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat tire pressure should I use with this rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe rated tire pressure range is 100–125 psi. For optimal performance with 28mm tires, 95–110 psi is typical for road racing. Exceeding 125 psi risks bead seat stress and is not recommended.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan I order custom spoke hole counts or branding for OEM builds?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Spoke hole diameter, valve hole diameter, assembly hole diameter, and nipple angles are all customizable. OEM branding and custom spoke counts are available for small to medium cycling brand orders. Contact us with build specifications for a quote.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat warranty does the Bola carbon rim carry?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eBola carbon rims are backed by a three-year manufacturer warranty covering structural defects under normal use conditions.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c 25mm inner wide carbon bike rim with 40mm and 45mm high wave 24 spoke disc brake,UV shape,super or ultra even extreme light,Bola\",\n  \"description\": \"700c Carbon Road Rim — 25mm Inner Wide, Disc Brake, UV Profile (Bola) The Bola 700c carbon road rim delivers race-ready aerodynamics and ultralight construction in a wide-profile, disc-brake-compatible design. Available in 40mm and 45mm depths, with a 25mm inner width optimized for 28–32mm tires, it is suited for competitive road racing, endurance cycling, and premium custom wheelset builds. Key Specifications Specification 40mm Variant 45mm Variant Rim Height 40mm 45mm Outer Width 34mm 31mm Inner Width 25mm 25mm ERD 549mm 549mm Spoke Count 24H 24H Brake Type Disc Brake Disc Brake Valve Hole Diameter 6.5mm (customizable) 6.5mm (customizable) Spoke Hole Diameter 4.5mm (customizable) 4.5mm (customizable) Assembly Hole Diameter 7.5mm (customizable) 7.5mm (customizable) Nipple Direction (Front) 7° 7° Nipple Direction (Rear) 5° \u0026amp; 7° (customizable) 5° \u0026amp; 7° (customizable) Tire Pressure Range 100–125 psi 100–125 psi Max Rider Weight 120 kg 120 kg Weight Options Grade Weight per Rim Standard 450 ± 15g Superlight 420 ± 10g Ultralight 395 ± 10g Extreme Light 375 ± 10g Structural Performance Data Forward Compressive Strength: \u0026gt;300 kg Lateral Torsion Resistance: \u0026gt;50 kg Spoke Hole Tension: \u0026gt;280 kg Dynamic Equilibrium: \u0026lt;3g imbalance Flatness Tolerance: \u0026lt;0.15mm Roundness Tolerance: \u0026lt;0.3mm Why Choose the Bola UV Profile Rim? Wide Inner Profile: The 25mm inner width accommodates modern 28–32mm road and gravel tires, improving air volume, rolling resistance, and rider comfort compared to traditional 19–21mm inner-width rims. Dual Depth Availability: The 40mm depth offers a balanced all-round ride with lower crosswind sensitivity; the 45mm depth increases aerodynamic efficiency for flat and rolling terrain at the cost of marginally higher wind sensitivity. Lightweight Construction: The Extreme Light grade at 375 ± 10g per rim is competitive for race-category carbon rims in this depth class. Note: lighter grades involve tighter layup tolerances and are recommended for riders under 80 kg and race-day use. OEM \u0026amp; Custom-Build Ready: Hole diameters, nipple angles, and spoke counts are customizable for brand-label and team-order builds. Minimum order quantities available on request. Disc Brake Optimized: Braking track is not present; the rim is designed exclusively for disc brake drivetrains, eliminating heat stress at the braking surface common in rim-brake carbon rims. Tradeoffs to Consider The 24-spoke lacing pattern reduces weight but requires precise tensioning during build. It is not recommended for riders above 100 kg without upgrading to the Standard weight grade. The 45mm depth increases aerodynamic drag sensitivity in crosswinds above approximately 30 km\/h lateral component; the 40mm depth is the more versatile option for mixed-terrain endurance use. Extreme Light grade rims are optimized for race-day performance and may exhibit reduced fatigue life under high-frequency cobblestone or gravel loads compared to the Standard grade. Frequently Asked Questions What is the best rim depth for endurance road cycling — 40mm or 45mm? For endurance cycling involving variable terrain and wind exposure, the 40mm depth is recommended. It offers a better crosswind stability profile while still delivering aerodynamic advantage over sub-35mm rims. The 45mm depth is better suited to flat road racing or time-trial segments where wind conditions are controlled. Is a 25mm inner wide carbon rim better for endurance or race cycling? A 25mm inner width supports a wider range of tire volumes (28–32mm road tires) than traditional 19–21mm rims, making it well-suited for both endurance and race applications. For race use, pairing with a 28mm tire at 90–100 psi reduces rolling resistance. For endurance, a 30–32mm tire at 80–90 psi improves comfort and traction. Are 24-spoke carbon rims strong enough for everyday road cycling? Yes, for riders under 100 kg riding on paved surfaces. The spoke hole tension rating of \u0026gt;280 kg per hole and forward compressive strength of \u0026gt;300 kg ensure structural integrity under typical road loads. For heavier riders or frequent rough-road use, the Standard weight grade (450 ± 15g) is recommended over the Extreme Light variant. What tire pressure should I use with this rim? The rated tire pressure range is 100–125 psi. For optimal performance with 28mm tires, 95–110 psi is typical for road racing. Exceeding 125 psi risks bead seat stress and is not recommended. Can I order custom spoke hole counts or branding for OEM builds? Yes. Spoke hole diameter, valve hole diameter, assembly hole diameter, and nipple angles are all customizable. OEM branding and custom spoke counts are available for small to medium cycling brand orders. Contact us with build specifications for a quote. What warranty does the Bola carbon rim carry? 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