Carbon Fiber Sporting Goods
Bola PRM 40G Carbon Gravel Disc Wheelset – 700C, 40mm Deep, 36mm Wide, Blade Carbon Spokes, Tubeless, 1230g
Bola PRM 40G Carbon Gravel Disc Wheelset – 700C, 40mm Deep, 36mm Wide, Blade Carbon Spokes, Tubeless, 1230g
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The Bola PRM 40G 700C Carbon Gravel Disc Wheelset delivers an optimized balance of aerodynamic efficiency and terrain adaptability for cyclists demanding reliable performance on both road and mixed surfaces. Featuring a 40mm deep, 36mm wide T800 matte carbon rim, straight-pull blade carbon spokes (20 front/rear, 2-cross lacing), and an internal width of 30mm, this wheelset is designed for tire stability with tubeless gravel tires up to 50c.
Experience Outstanding Performance with the 40mm Carbon Gravel Disc Wheelset
- Weight: 1230g per set (excluding tape/valves), lighter than typical alloy or composite competitors (1335–1500g range).
- Rim Profile: 40mm depth supports aerodynamic gains; 36mm external/30mm internal widths improve support for high-volume gravel tires, enhancing grip and comfort on rough terrain.
- Construction: T800 UD or marble matte carbon for high strength-to-weight; straight-pull blade carbon spokes boost lateral stiffness with minimized rotational mass.
- Hub System: BL350 alloy hub with Enduro bearings, 54T ratchet for rapid power transfer, Center Lock disc, compatible with 12x100mm/12x142mm thru-axle and QR systems.
- Certifications: Fully certified to ISO 4210-7 and REACH compliance for ride safety and material standards.
Aerodynamics & Stability
The 40mm rim depth offers a measured balance between crosswind stability and aerodynamic performance, suitable for mixed terrain and variable wind conditions. The 30mm internal rim width supports wider tire setups, which lowers rolling resistance and enables better compliance over gravel and uneven surfaces.
Comparison Table
| Feature | Bola PRM 40G | Competitor Range |
|---|---|---|
| Rim Depth | 40mm | 40–44mm |
| Internal Rim Width | 30mm | 21–27mm |
| Weight (Set) | 1230g | 1335–1500g |
| Spokes | Blade Carbon | Steel/Alloy |
| Hub Engagement | 54T Ratchet | 36–54T |
| Tubeless Ready | Yes | Yes |
| Certifications | ISO 4210-7, REACH | Varies |
Real-World Use Cases
- Road & Gravel: Engineered for modern gravel bikes, performs equally well for endurance road cyclists seeking wider tubeless compatibility and low weight.
- Performance Tradeoffs: The 40mm depth provides aerodynamic benefits, while the lighter carbon spoke system increases responsiveness. Repair of carbon spokes requires specialist tools/training compared to alloy.
Frequently Asked Questions
Are 40mm deep carbon gravel wheels good for both road and off-road riding?
Yes, the 40mm rim depth and wide 36mm external profile balance aerodynamic performance on pavement with greater tire support and stability for gravel, making them suitable for mixed-terrain cyclists.
How does a 1230g 700C carbon wheelset compare to alloy options for gravel bikes?
At 1230g per set, this carbon wheelset is significantly lighter than most alloy counterparts (typically 1500g+), offering quicker acceleration and improved climbing efficiency.
What are the benefits of straight-pull blade carbon spokes on gravel wheelsets?
Blade carbon spokes reduce rotational mass and enhance lateral stiffness, resulting in responsive handling and improved power transfer, particularly noticeable on off-road surfaces.
Is this wheelset compatible with tubeless tires and thru-axle setups?
Yes, the rim is tubeless-ready, and hubs support both 12x100mm/12x142mm thru-axle and quick-release systems for maximum compatibility with modern gravel and road bikes.
Will wider 36mm carbon rims improve tire stability and comfort on mixed terrain?
The wide rim profile allows the use of larger tire volumes (up to 50c), which increases stability, lowers recommended pressures, improves compliance, and provides better grip and comfort on rough surfaces.
Advanced Design for Gravel Riding
The 40mm carbon gravel disc wheelset by Bola PRM 40G redefines lightweight performance and durability. Featuring a 700C rim size with a 40mm deep and 36mm wide profile, these wheels optimize aerodynamics while maintaining impressive stability on rough terrain. The blade carbon spokes add extra rigidity and strength without compromising weight, making them perfect for long rides and challenging gravel trails. This 1230g wheelset balances speed and control, enhancing your gravel cycling experience with every turn.
Exceptional Tubeless Compatibility and Durability
Bola PRM 40G’s tubeless-ready design allows for better traction, reduced rolling resistance, and fewer flats on unpredictable surfaces. The robust carbon rim material ensures superior impact resistance while remaining ultra-light. Riders benefit from an easier setup and improved comfort during extended rides thanks to the tubeless system. Whether tackling loose gravel or mixed terrain, this 40mm carbon gravel disc wheelset delivers reliable performance and endurance under demanding conditions.
Optimized for Disc Brake Systems and Versatile Use
Compatibility with disc brakes makes these wheels highly versatile for modern gravel bicycles. The disc brake design improves stopping power and control on steep descents and slippery surfaces. The 36mm width accommodates wider tires, enhancing grip and cushioning on rough roads. Bola’s proprietary carbon spokes and high-quality hubs ensure your wheelset remains true and responsive throughout the seasons, making this 40mm carbon gravel disc wheelset an excellent investment for serious gravel riders seeking quality and performance.
