Bola 700C 40mm Tubeless Carbon Road Gravel Rim — 32mm Outer / 26mm Inner Wide

Take a modern approach to fast, comfortable road and gravel riding with the Bola 700C tubeless-ready carbon rim. Its 40mm profile and 32mm outer / 26mm inner width are optimised for contemporary 31–48mm 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 Road Rim - Designed for road and gravel wheel builds

Tubeless-ready sealing and a 26mm(hook or hookless) inner width accommodate recommended tyre sizes while enabling lower pressures for better vibration damping and confidence over light pavement.

Riding with these rims tends to feel composed: the wider tyre support reduces sidewall deformation and permits tyre pressures up 90 psi range while still improving comfort when using 31–48mm 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

• Optimised for modern tyre sizes: 26mm inner width supports 31–48mm road tubeless tyres for a balanced tyre-to-rim ratio and reduced rolling discomfort.
• Aerodynamic and stiff: 40mm profile height provides aerodynamic benefit with lateral stiffness suited to spirited road riding and mixed-surface endurance rides.
• Tubeless-ready construction: Sealed rim bed compatible with standard tubeless tape and valves; minimum recommended tyre width 28mm.
• Weight tier options: Choose Normal (440±15g), Superlight (405±15g), Ultralight (380±10g), or Extreme Light (360±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 105kg and recommended tyre pressure up 90 psi.
• 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 poor surfaces are advised toward Superlight or Normal options. The rim’s ERD is 558mm and standard spoke and assembly hole diameters are 4.5mm and 7.5mm respectively, each available to customise for specific builds.