Carbon Fiber Sporting Goods
700C Carbon Road Rim | 28mm Wide | 45mm & 50mm Depth | Disc Brake | 20/24-Spoke
700C Carbon Road Rim | 28mm Wide | 45mm & 50mm Depth | Disc Brake | 20/24-Spoke
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Bola 700C carbon road rims, with 28mm outer width and U-shape profile, are engineered for disc brake systems and high-performance road cycling. Choose between 45mm or 50mm rim depths, both offering a 22mm internal width for superior tire support and tubeless compatibility. Weight options range from 360g (Extreme Light) to 440g, supporting diverse riding disciplines from racing to long-distance endurance.
Product Features
- Rim Profile: 700C (ISO 622), 28mm outer / 22mm inner width, U-shape design
- Depth Options: 45mm or 50mm for tailored aerodynamics
- Weight Tiers: 360g / 380g / 410g / 440g (±15g tolerance)
- Spoke Count: 20 or 24 (disc brake only)
- Construction: High-modulus toray-grade carbon, UD and woven layup
- Tubeless Compatible: Supports tubeless and clincher tires, 28–32mm recommended
- Max Rider Weight: 120 kg | Tire Pressure: 100–125 psi
- Valve Hole: 6.5mm standard (custom options available)
- Certifications: >300kg compressive, >280kg spoke tension, <0.3mm roundness, <0.15mm flatness
Rim Depth Comparison
| Depth | Wheel Use Case | Weight | Aero/Crosswind |
|---|---|---|---|
| 45mm | Climbing, mixed terrain | From 360g | Best crosswind stability |
| 50mm | Flat & rolling roads | From 370g | Max aerodynamics, tradeoff in crosswinds |
Application & Compatibility
- Ideal for competitive racing, endurance rides, and custom OEM builds
- Compatible with 700C disc brake road bikes, 24-hole disc hubs, and tubeless or clincher tires 28-32mm wide
- Manufactured to industry quality standards and documented testing tolerances
Frequently Asked Questions
What are the best 700C carbon rims for disc brake road bikes under 400 grams?
Bola offers 700C carbon disc rims starting at 360g (Extreme Light) and 380g (Light), rigorously tested for strength and reliability. Ideal for cyclists demanding ultralight weight without sacrificing durability.
Is a 28mm wide carbon rim better than 25mm for endurance cycling?
28mm width rims provide increased tire support and better stability, especially when paired with 28-32mm tires commonly used for endurance or comfort-focused cycling. This results in a smoother, more controlled ride on varied surfaces.
What's the difference between 45mm and 50mm carbon rims for climbing vs. flat roads?
45mm depth rims offer improved crosswind stability and are preferred for climbing and mixed terrain. 50mm rims maximise aerodynamic efficiency for flat or rolling courses, with a slight tradeoff in crosswind handling. Choose based on intended use.
Are ultralight carbon bike rims safe for everyday riding or just racing?
Bola carbon rims are independently tested for high compressive strength and spoke tension. While Extreme Light rims under 380g are optimal for racing, the Normal (440g) and Light (410g) weight options offer practical durability for daily use, including heavier riders (up to 120 kg).
Which carbon rim depth gives the best balance of aerodynamics and crosswind stability?
45mm depth strikes an optimal balance, providing aerodynamic gains while maintaining better control in windy conditions. 50mm is preferred where maximum aero is required but may be more challenging in gusty winds.
