Bola 700c Tubeless Carbon Road Rim 45mm — 36mm Outer / 30mm Inner, 375–450g Options

When you ride mixed road and gravel routes or chase fast group rides, the Bola 700c 45mm tubeless carbon rim balances aerodynamic gains and tire support so you feel faster without sacrificing comfort. Its 36mm outer and 30mm inner width create a stable tyre platform for 28c–38c tubeless road and gravel tyres, while four factory weight tiers let builders tune mass to performance goals.

Bola 700c Tubeless Carbon Rim 45mm - Designed for road and gravel performance

Built as a tubeless-ready platform with a sealed bed, this rim accepts standard tubeless tape and valves and is compatible with rim-brake or disc-brake builds depending on the variant chosen. The wide external profile smooths airflow around modern tyres, and the 30mm inner width conforms to ETRTO recommendations for efficient tyre support and consistent handling across varied surfaces.

The rim’s structural testing and manufacturing tolerances emphasize predictable ride quality: forward compressive strength above 300 kg, spoke hole tension exceeding 280 kg, dynamic equilibrium under 3 g, and strict flatness and roundness tolerances. Four weight tiers—Normal, Super Light, Ultra Light, and Extreme Light—offer builders clear tradeoffs between durability and rotational weight.

Why it fits your routine

• Optimized tyre support: 30mm inner width is ideal for 28c–38c tubeless tyres, giving stable sidewalls, improved cornering, and better volume for lower pressures on rough roads.
• Aero-conscious profile: 36mm outer width and 45mm depth create a smoother tyre-to-rim transition that can reduce turbulence with wider tyres at road speeds.
• Selectable weight tiers: Choose 450 ±15g (Normal) for durability, 425 ±10g (Super Light) for all-round performance, 395 ±10g (Ultra Light) for climbing and crits, or 375 ±10g (Extreme Light) for maximal weight savings.
• Tested strength and precision: Exceeds 300 kg forward compressive strength, >50 kg lateral torsion resistance, spoke hole tension >280 kg, and dynamic equilibrium <3 g for consistent wheel builds.
• Customizable details: Valve, spoke, and assembly hole diameters and nipple angles can be customized; drilling counts available for OEM or bespoke builds.
• Rider guidance: Rated for riders up to 120 kg; riders over 90 kg or those using high-torque disc braking should prefer the Normal or Super Light tiers for long-term reliability.

Technical details for builders include ERD 548 mm, standard valve hole 6.5 mm, spoke hole 4.5 mm, assembly hole 7.5 mm, tyre pressure range 100–125 psi, flatness tolerance <0.15 mm, and roundness tolerance <0.3 mm.