700C 65mm Tubeless Carbon Triathlon Rim 32mm outer 26mm | Bola

Take a purpose-built approach to triathlon and time trial performance with the Bola 700C tubeless-ready carbon rim. Its 65mm profile and 32mm outer / 26mm inner width are optimised for contemporary 31–48mm tyres, delivering maximum aerodynamic advantage on flat and rolling TT courses. Available in four weight tiers, the rim lets you prioritise durability or weight savings depending on your build and event demands.

Bola 700C Tubeless Carbon Triathlon Rim - Designed for TT and triathlon wheel builds

Tubeless-ready sealing and a 26mm (hook or hookless) inner width accommodate recommended tyre sizes while enabling lower pressures for reduced rolling resistance at race speeds.

Riding with these rims tends to feel fast and planted on flat courses: 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 maximum aero advantage can choose lighter layups, while heavier riders or those on rougher courses can select more robust schemes.

Why it fits your routine

• The deepest rim in the lineup — built for flat TT and triathlon: The 65mm depth delivers the maximum aerodynamic advantage available in the Bola range, making it the definitive choice for time trials, triathlon bike legs, and any flat course where every watt of drag reduction counts.
• Wide-profile stability at speed: The 32mm outer width improves airflow transition at the tyre-to-rim junction and reduces crosswind sensitivity compared to older narrow-profile 65mm rims — giving you the full aero benefit with more confidence at race speeds on exposed courses.
• Tubeless-ready for lower rolling resistance at race pressures: Run 31–48mm tubeless tyres at optimised pressures to minimise rolling resistance on smooth TT and triathlon courses, without the puncture risk of tubes at high inflation.
• Weight tier options: Choose Normal (555±15g), Superlight (510±15g), Ultralight (485±10g), or Extreme Light (465±10g) to match durability needs or power-to-weight 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 120kg and recommended tyre pressure up to 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 ~120kg or those on rougher courses are advised toward Superlight or Normal options. The rim’s ERD is 508mm and standard spoke and assembly hole diameters are 4.5mm and 7.5mm respectively, each available to customise for specific builds.