# 700c Tubeless Carbon Gravel Rim – 30mm Inner / 36mm Outer Width, 35mm Height, Four Light Versions (350–435g) ## 700c Tubeless Carbon Gravel Rim — 30mm Inner Width, 35mm Height A 700c tubeless-ready carbon rim designed for gravel racing and endurance riding. The 30mm inner width accommodates tires from 38mm to 50mm at optimal pressure, while the 35mm profile balances aerodynamic efficiency with crosswind stability on mixed terrain. Available in four weight grades to match rider priority: compliance, weight savings, or cost efficiency. ## Technical Specifications Parameter Value Wheel Standard 700c (ISO 622mm) Rim Shape UV (hookless-compatible) Rim Height 35mm Outer Width 36mm Inner Width 30mm ERD 568mm Spoke Hole Diameter 4.5mm (customizable) Valve Hole Diameter 6.5mm (customizable) Assembly Hole Diameter 7.5mm (customizable) Nipple Direction (Front) 7° Nipple Direction (Rear) 5° & 7° (customizable) Min / Max Tire Pressure 100 / 125 psi Max Rider Weight 120 kg Flatness Tolerance <0.15mm Roundness Tolerance <0.3mm Dynamic Balance <3g ## Weight Variants Grade Weight (per rim) Best For Normal 435 ± 15g Training, value builds Superlight 390 ± 10g All-day endurance gravel Ultralight 370 ± 10g Gravel race builds Extreme Light 350 ± 10g Competitive weight-optimized builds ## Structural Strength Testing - **Forward Compressive Strength:** >300 kg - **Lateral Torsion:** >50 kg - **Spoke Hole Tension:** >280 kg ## Why 30mm Inner Width for Gravel? A 30mm inner width is the current industry benchmark for gravel-specific rims. It widens a 40mm tire's contact patch by approximately 2–4mm versus a 25mm inner rim, improving traction and enabling lower tire pressures (typically 28–38 psi for riders under 80 kg). The UV (hookless) bead profile supports tubeless setup without sealant blowout risk at the stated 100–125 psi range. ## 35mm Height: Gravel Racing vs. Endurance Riding At 35mm, this rim sits at the crossover point between an aero road rim and a traditional gravel depth. It provides measurable aerodynamic benefit over shallow 25mm rims on smooth gravel sectors while remaining manageable in crosswinds above 30 km/h — a tradeoff that makes it well-suited to mixed-surface events such as gravel races with pavement transitions. Riders prioritizing pure compliance on technical singletrack may prefer a 25mm depth; those on fast open gravel gain from the 35mm profile. ## Customization Options - Spoke hole count: OEM / custom drillings available - Hole diameters (spoke, valve, assembly): customizable on request - Nipple angle: front 7°, rear 5° & 7° or custom - Private label / OEM branding supported ## Frequently Asked Questions **Is a 30mm inner width rim compatible with 700c gravel tires?** Yes. A 30mm inner width is recommended for tires between 38mm and 50mm. It meets the ETRTO 2020 guideline that inner rim width should be 1.8–3× narrower than mounted tire width for hookless tubeless use. **What is the difference between the Superlight and Ultralight versions?** The Superlight grade (390 ± 10g) uses a slightly thicker layup for added durability during training; the Ultralight (370 ± 10g) reduces resin content for race-day weight savings. Both meet the same structural strength thresholds (>300 kg compressive, >280 kg spoke tension). **Can I run this rim clincher (with inner tube) as well as tubeless?** The UV hookless profile is optimized for tubeless setup. Clincher use with a standard hooked tire is not recommended on hookless rims per ETRTO safety guidelines. **What tire pressure range is supported?** Minimum 100 psi / maximum 125 psi. For tubeless gravel use, most riders operate 28–45 psi — well within the structural range of this rim. **What is the warranty period?** Three years from date of purchase against manufacturing defects. ## Details - **Price:** 320.0 USD - 350.0 USD - **Type:** Carbon Bicycle Rim - **Tags:** 30mm inner width rim, 35mm carbon rim, 36mm wide, 700c, 700c carbon gravel rim, carbon bike rim, carbon rim OEM, gravel bike rim, gravel wheelset component, hookless carbon rim, rims, tubeless gravel rim, ultralight carbon rim, wide carbon rim ## Variants | Variant | Price | Available | |---------|-------|-----------| | UD Matt / 20/20 / Standard | 320.00 USD | In stock | | UD Matt / 20/20 / Superlight | 330.00 USD | In stock | | UD Matt / 20/20 / Ultralight | 340.00 USD | In stock | | UD Matt / 20/20 / Extremelight | 350.00 USD | In stock | | UD Matt / 24/24 / Standard | 320.00 USD | In stock | | UD Matt / 24/24 / Superlight | 330.00 USD | In stock | | UD Matt / 24/24 / Ultralight | 340.00 USD | In stock | | UD Matt / 24/24 / Extremelight | 350.00 USD | In stock | | UD Matt / Customs / Standard | 320.00 USD | In stock | | UD Matt / Customs / Superlight | 330.00 USD | In stock | | UD Matt / Customs / Ultralight | 340.00 USD | In stock | | UD Matt / Customs / Extremelight | 350.00 USD | In stock | | UD Glossy / 20/20 / Standard | 320.00 USD | In stock | | UD Glossy / 20/20 / Superlight | 330.00 USD | In stock | | UD Glossy / 20/20 / Ultralight | 340.00 USD | In stock | | UD Glossy / 20/20 / Extremelight | 350.00 USD | In stock | | UD Glossy / 24/24 / Standard | 320.00 USD | In stock | | UD Glossy / 24/24 / Superlight | 330.00 USD | In stock | | UD Glossy / 24/24 / Ultralight | 340.00 USD | In stock | | UD Glossy / 24/24 / Extremelight | 350.00 USD | In stock | | UD Glossy / Customs / Standard | 320.00 USD | In stock | | UD Glossy / Customs / Superlight | 330.00 USD | In stock | | UD Glossy / Customs / Ultralight | 340.00 USD | In stock | | UD Glossy / Customs / Extremelight | 350.00 USD | In stock | | Marble Matt / 20/20 / Standard | 320.00 USD | In stock | | Marble Matt / 20/20 / Superlight | 330.00 USD | In stock | | Marble Matt / 20/20 / Ultralight | 340.00 USD | In stock | | Marble Matt / 20/20 / Extremelight | 350.00 USD | In stock | | Marble Matt / 24/24 / Standard | 320.00 USD | In stock | | Marble Matt / 24/24 / Superlight | 330.00 USD | In stock | | Marble Matt / 24/24 / Ultralight | 340.00 USD | In stock | | Marble Matt / 24/24 / Extremelight | 350.00 USD | In stock | | Marble Matt / Customs / Standard | 320.00 USD | In stock | | Marble Matt / Customs / Superlight | 330.00 USD | In stock | | Marble Matt / Customs / Ultralight | 340.00 USD | In stock | | Marble Matt / Customs / Extremelight | 350.00 USD | In stock | | Marble Glossy / 20/20 / Standard | 320.00 USD | In stock | | Marble Glossy / 20/20 / Superlight | 330.00 USD | In stock | | Marble Glossy / 20/20 / Ultralight | 340.00 USD | In stock | | Marble Glossy / 20/20 / Extremelight | 350.00 USD | In stock | | Marble Glossy / 24/24 / Standard | 320.00 USD | In stock | | Marble Glossy / 24/24 / Superlight | 330.00 USD | In stock | | Marble Glossy / 24/24 / Ultralight | 340.00 USD | In stock | | Marble Glossy / 24/24 / Extremelight | 350.00 USD | In stock | | Marble Glossy / Customs / Standard | 320.00 USD | In stock | | Marble Glossy / Customs / Superlight | 330.00 USD | In stock | | Marble Glossy / Customs / Ultralight | 340.00 USD | In stock | | Marble Glossy / Customs / Extremelight | 350.00 USD | In stock | ## Images - 29er Carbon MTB DH Rim – 40mm Outer / 32mm Inner Wide, 30mm high for Down hill | Bola - 700c Tubeless Carbon Gravel Rim diagram showing dimensions: 30mm inner width, 36mm outer width, 35mm height, and weight optio - Bola 700c 45mm Carbon Road Rim – 34mm Outer, 28mm Inner, Tubeless Ready - 700c Tubeless Carbon Gravel Rim – 30mm Inner / 36mm Outer Width, 35mm Height, Four Light Versions (350–435g) Carbon Fiber Sporting Goods - 700c Tubeless Carbon Gravel Rim – 30mm Inner / 36mm Outer Width, 35mm Height, Four Light Versions (350–435g) Carbon Fiber Sporting Goods ## Additional Information - **Related products settings:** ahead --- > Source: [Bola Carbon Wheelset ](https://bolacarbon.com/products/700c-tubeless-carbon-gravel-rim-30mm-inner-36mm-outer-width-35mm-height-four-light-versions-350-435g) > Updated: 2026-07-31