Carbon Fiber Sporting Goods
Bola EXP 40T Carbon Tubular Wheelset 40mm Rim Brake DT Swiss 240S | 25/28mm
Bola EXP 40T Carbon Tubular Wheelset 40mm Rim Brake DT Swiss 240S | 25/28mm
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Engineered for competitive road cycling and club-level racing, the Bola EXP 40T Carbon Tubular Wheelset delivers a 40mm aero profile, 1170g ±20g system weight, and premium DT Swiss 240S hubs for optimal climbing responsiveness and rim brake efficiency. Available in 25mm and 28mm widths to suit 23–30c tubular tires, this set combines T700/T800 unidirectional matte carbon durability with Sapim CX Ray aero spokes—proven to withstand riders up to 100kg.
Technical Specifications
- Rim Type & Depth: Tubular, 40mm deep, external widths 25 or 28mm
- Material: T700/T800 UD matte carbon fiber
- Brake Surface: Basalt-reinforced rim brake
- Hubs: DT Swiss 240S, straight-pull, 20f/24r
- Spokes: Sapim CX Ray, high-tensile aero stainless
- Total Weight: 1170g ±20g (wheelset only)
- Rider Weight Limit: 100kg
- Country of Origin: China
- Certification: EN 14781 compliant
- Warranty: 2 years
- Use: Racing, endurance, advanced club rides
Use-Cases & Real-World Performance
- Climbing: 1170g low rotational mass enhances climbing performance over heavier deep-section wheels.
- Daily Road Cycling: Balanced 40mm depth improves handling in crosswinds and offers aero advantage on flats without excess bulk.
- Durability for Heavier Riders: Sapim CX Ray spokes and reinforced layup tested for up to 100kg rider weight; regular spoke inspections recommended for continued reliability.
- Brake Surface: Basalt provides improved heat resistance and modulation compared to standard carbon surfaces, with reduced wear under rim-brake loads.
Comparison Table
| Spec | Bola EXP 40T | DT Swiss 1800 SPLINE 23 |
|---|---|---|
| Rim Depth | 40mm | 23mm |
| Width Options | 25/28mm | 23mm |
| Weight (pair) | 1170g | Approx. 1675g |
| Hub | DT Swiss 240S | DT Swiss Ratchet LN |
| Tubular/Tubeless | Tubular only | Tubeless ready |
Frequently Asked Questions
Are 40mm deep carbon tubular wheels good for climbing and everyday road cycling?
Yes, 40mm carbon tubular wheels like the Bola EXP 40T offer a balance of aerodynamic benefit and climbing efficiency. The 1170g system weight is notably lighter than most carbon clincher wheels in this depth range, improving acceleration and responsiveness on climbs and flat terrain.
How do DT Swiss 240S hub wheelsets compare to other lightweight carbon wheelsets?
DT Swiss 240S hubs are renowned for smooth rolling efficiency and low maintenance, using a star ratchet system for reliable engagement. Compared to standard hubs, they improve long-term durability and serviceability, and are often chosen by pro-level riders for high-performance builds.
What's the difference between 25mm and 28mm wide tubular carbon wheels for road bikes?
25mm rims are ideal for 23–25c tubular tires, commonly used in racing for minimized rolling resistance. 28mm rims fit 25–30c tubular tires, providing a wider base for improved comfort, grip, and aerodynamics—especially for heavier riders or endurance events. Always confirm frame clearance.
Is a 1170g wheelset with Sapim CX Ray spokes durable enough for riders over 90kg?
The Bola EXP 40T is tested for up to 100kg rider weight, with Sapim CX Ray spokes known for high fatigue life and impact resistance. For riding above 90kg, regular inspections of spoke tension and condition are advised for optimal performance and longevity.
What are the pros and cons of basalt rim brake surfaces on carbon bicycle wheels?
Basalt enhances heat dissipation, improving braking consistency and reducing wear compared to standard carbon brake tracks. However, prolonged braking under wet or extremely high-speed conditions still requires careful modulation for best results.
