700C Tubeless Carbon Gravel Rim 42mm outer 35mm Inner 45mm

Take a modern approach to fast, comfortable road and gravel riding with the Bola 700C tubeless-ready carbon rim. Its 45mm profile and 42mm outer / 35mm inner width are optimised for contemporary 38–56mm tyres, delivering aerodynamic gains while supporting lower tyre pressures for improved comfort and traction. Available in four weight tiers, the rim lets you prioritise durability or weight savings depending on your build and riding style.

Bola 700C Tubeless Carbon Gravel Rim - Designed for gravel wheel builds

Tubeless-ready sealing and a 35mm inner width accommodate recommended tyre sizes while enabling lower pressures for better vibration damping and confidence over rough pavement.

Riding with these rims tends to feel composed: the wider tyre support reduces sidewall deformation and permits tyre pressures up 70 psi range while still improving comfort when using 38–56mm tyres. Riders seeking a climbing advantage can choose lighter layups, while heavier riders or rough-road users can select more robust schemes.

Why it fits your routine

• Built for gravel speed and comfort: The 42mm outer / 35mm inner width is purpose-designed for 38–56mm gravel tyres, enabling lower pressures for better traction and vibration damping on rough terrain — without sacrificing the 45mm aero profile on faster gravel sections.
• Lighter than the 50mm gravel version: At 410–490g, this rim saves 25–30g per rim versus the 50mm gravel model, making it the better choice for hilly gravel routes and mixed-terrain events where climbing matters.
• Tubeless-ready for gravel confidence: Sealed rim bed supports standard tubeless tape and valves; lower pressures (up to 70 psi) reduce pinch flats and improve grip on loose surfaces.
• Weight tier options: Choose Normal (490±15g), Superlight (465±10g), Ultralight (430±10g), or Extreme Light (410±10g) to match durability needs or climbing priorities.
• Strength and tolerance data: Forward compressive strength >300kg, lateral torsion resistance >50kg, spoke hole tension >280kg; flatness <0.15mm, roundness <0.3mm, dynamic balance <3g.
• Ride-ready limits: Maximum rider weight 110kg and recommended tyre pressure up to 70 psi for gravel tyres.
• Customisation available: Spoke hole count, valve hole (6.5mm standard), assembly hole, and nipple direction are configurable for builder preference.

Weight trade-offs are explicit: lighter layups save 60–80g per rim versus the Normal scheme but reduce layup margin; riders over ~90kg or those regularly on technical terrain are advised toward Superlight or Normal options. The rim's ERD is 548mm and standard spoke and assembly hole diameters are 4.5mm and 7.5mm respectively, each available to customise for specific builds.