{"product_id":"700c-34mm-wide-carbon-gravel-bike-rim-35mm-40mm-depth-24h-disc-brake-370-440g-bola","title":"700c 34mm Wide Carbon Gravel Bike Rim | 35mm \u0026 40mm Depth | 24H Disc Brake | 370–440g | Bola","description":"\u003ch2 id=\"tinymce_scroll_sign\"\u003ePremium 700c Carbon Gravel Bike Rim for Ultimate Performance\u003c\/h2\u003e\n\u003cp\u003eThe Bola 700c carbon gravel rim is a tubeless-ready, disc-brake-specific rim built for gravel racing, mixed-terrain endurance, and custom wheelset builds. Available in 35mm and 40mm profile depths with a 34mm external \/ 25mm internal width, it accommodates tire widths from 28mm to 50mm and accepts pressures between 100 and 125 psi. Weight ranges from 440g (standard) to 370g (extreme light) depending on selected layup — enabling builders to balance durability against weight targets without changing rim geometry.\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\u003eSpecification\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\u003e700c (ISO 622mm BSD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfile Depth\u003c\/td\u003e\n\u003ctd\u003e35mm or 40mm (UV wave shape)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Width\u003c\/td\u003e\n\u003ctd\u003e34mm (35mm profile) \/ 31mm (40mm profile)\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\u003e559mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Count\u003c\/td\u003e\n\u003ctd\u003e24 holes\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 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° \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\n\u003ch2\u003eWeight Variants\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\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\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e440 ± 15g\u003c\/td\u003e\n\u003ctd\u003eTraining builds, heavier riders (up to 120kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e415 ± 10g\u003c\/td\u003e\n\u003ctd\u003eEndurance gravel racing, mixed terrain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e390 ± 10g\u003c\/td\u003e\n\u003ctd\u003eCompetitive gravel racing, weight-optimized builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtreme Light\u003c\/td\u003e\n\u003ctd\u003e370 ± 10g\u003c\/td\u003e\n\u003ctd\u003eElite racing; best paired with riders under 75kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTrade-off Note\u003c\/h3\u003e\n\u003cp\u003eThe Extreme Light (370g) layup prioritizes weight reduction over impact margin. For riders over 90kg or on highly technical, rock-strewn terrain, the Superlight (415g) or Standard (440g) grade is recommended to maintain spoke tension integrity over \u0026gt;280kg and forward compressive strength \u0026gt;300kg.\u003c\/p\u003e\n\u003ch2\u003eStructural Performance 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 Tolerance:\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:\u003c\/strong\u003e \u0026lt;0.15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoundness:\u003c\/strong\u003e \u0026lt;0.3mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUse-Case Fit\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGravel Racing (mixed surface):\u003c\/strong\u003e 34mm internal width supports 40–50mm tires at lower pressures for traction; 40mm depth adds aero efficiency on open road sections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndurance \/ Bikepacking:\u003c\/strong\u003e 35mm depth lowers crosswind sensitivity while retaining structural stiffness for loaded builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Wheelset Builds (OEM\/Brand):\u003c\/strong\u003e Customizable spoke hole diameter (4.5mm std), nipple angles, valve hole size, and branding options make this rim suitable for small and medium cycling brands sourcing OEM-ready components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless Setup:\u003c\/strong\u003e 25mm inner width and tubeless-compatible bead profile support tubeless conversion with standard tape and valves.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCustomization Options\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpoke hole diameter: 4.5mm standard or custom\u003c\/li\u003e\n\u003cli\u003eValve hole diameter: 6.5mm standard or custom\u003c\/li\u003e\n\u003cli\u003eAssembly hole diameter: 7.5mm standard or custom\u003c\/li\u003e\n\u003cli\u003eNipple angle: customizable per front\/rear application\u003c\/li\u003e\n\u003cli\u003eLogo, color finish, and decal options available for brand partners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a 34mm wide carbon rim too wide for gravel riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo. A 34mm external \/ 25mm internal width is within the optimal range for gravel-specific tire fitment (38–50mm tires). It provides a supportive bead base that improves tire casing shape, lowers rolling resistance, and allows lower inflation pressures for better traction on loose surfaces.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between the 35mm and 40mm depth options?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe 35mm profile is shallower, reducing crosswind sensitivity and weight — better suited for technical or mountainous gravel routes. The 40mm profile provides modest aerodynamic gain on flat or open sections. Both share the same 34mm\/25mm width and structural tolerances.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow light can a carbon gravel rim be without sacrificing durability?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAt 390g (Ultralight) and 370g (Extreme Light), both grades maintain spoke hole tension tolerance \u0026gt;280kg and forward compressive strength \u0026gt;300kg. The Extreme Light grade is best suited for riders under 75–80kg on non-technical terrain. The Ultralight (390g) is the recommended balance point for most competitive applications.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs this rim compatible with tubeless tires?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The rim features a tubeless-compatible bead profile with a 25mm internal width. Standard tubeless rim tape and valves (6.5mm valve hole) are required; these are not included.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat spoke count and hole pattern does this rim use?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThis rim uses a 24-hole pattern, suitable for building lightweight disc brake gravel wheelsets with standard J-bend or straight-pull spokes. Custom hole counts may be available — contact us for OEM enquiries.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the warranty and quality assurance policy?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAll rims are backed by a three-year warranty. Each unit is manufactured to flatness \u0026lt;0.15mm and roundness \u0026lt;0.3mm tolerances, with dynamic balance verified at \u0026lt;3g per rim.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eDesign and Dimensions\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe 700c carbon gravel bike rim by Bola boasts a 34mm internal width, optimized for gravel riding stability and comfort. Available in two rim depths, 35mm and 40mm, this rim strikes an ideal balance between aerodynamics and control on mixed terrain. Its 24-hole configuration enhances durability and wheel strength, making it perfect for demanding gravel trails. These design choices ensure excellent tire support and improved ride quality for gravel cyclists seeking both speed and resilience.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eLightweight and Durable Construction\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWeighing between 370 and 440 grams depending on depth, this 700c carbon gravel bike rim offers a superior weight-to-strength ratio. Crafted from high-quality carbon fiber, it provides exceptional stiffness and impact resistance while keeping the wheelset light for efficient power transfer. This lightweight construction reduces fatigue on long rides and improves acceleration, making it an excellent choice for competitive and recreational gravel riders alike.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eCompatibility and Performance Features\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSpecifically designed for 24-hole disc brake setups, the Bola carbon rim ensures compatibility with modern gravel bike braking systems. Its carbon layup and rim profile optimize heat dissipation during braking, reducing fade and enhancing control on steep descents. Combined with the rim's robust build and wide 34mm internal width, this rim delivers responsive handling and reliable stopping power in diverse off-road conditions.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ Standard","offer_id":48133317329150,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Superlight","offer_id":48133317361918,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Ultralight","offer_id":48133317394686,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Extremelight","offer_id":48133317427454,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Standard","offer_id":48133317460222,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Superlight","offer_id":48133317492990,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Ultralight","offer_id":48133317525758,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Extremelight","offer_id":48133317558526,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Standard","offer_id":48133317591294,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Superlight","offer_id":48133317624062,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Ultralight","offer_id":48133317656830,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Extremelight","offer_id":48133317689598,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Standard","offer_id":48133317722366,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Superlight","offer_id":48133317755134,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Ultralight","offer_id":48133317787902,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Extremelight","offer_id":48133317820670,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/wave_rims_512e095a-18ab-4660-add6-dbe651d0d7f8.jpg?v=1780298379","url":"https:\/\/bolacarbon.com\/nl\/products\/700c-34mm-wide-carbon-gravel-bike-rim-35mm-40mm-depth-24h-disc-brake-370-440g-bola","provider":"Bola Carbon Wheelset ","version":"1.0","type":"link"}