Carbon Fiber Sporting Goods
Bola SL 38RB Carbon Tubular Road Wheelset – DT Swiss 350, CX-Ray,700C 38mm, 25mm Rim Brake
Bola SL 38RB Carbon Tubular Road Wheelset – DT Swiss 350, CX-Ray,700C 38mm, 25mm Rim Brake
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Bola SL 38RB Carbon Tubular Road Wheelset features a high-modulus carbon rim (38mm deep, 25mm wide), DT Swiss 350 hubs, and bladed Sapim CX-Ray spokes for riders seeking a balance of aerodynamic efficiency and climbing response in competitive road racing, criterium, and endurance cycling. Hand-built for reliability and serviceability, the set weighs is super light to1,190g (±20g) per pair and is certified for riders up to 100kg under EN14781 and ISO 4210 standards.
Technical Specifications
- Rim Profile: 38mm deep / 25mm wide high-modulus carbon, tubular fit.
- Hubs: DT Swiss 350, 100mm front / 130mm rear spacing, sealed cartridge bearings.
- Spokes: Sapim CX-Ray bladed stainless steel (20F radial / 24R; 2x drive, radial non-drive).
- Weight per Set: 1,190g ±20g (excludes tape/tubulars).
- Brake Type: Rim brake (caliper), machined braking surface.
- Certification: EN14781, ISO 4210 fatigue testing, UCI road race legal.
- Max Rider Weight: 100kg.
Performance Use Cases
- Road Racing: Optimized rim depth and lightweight construction delivers fast acceleration and sustained speed on flat to rolling terrain.
- Criterium: Wide 25mm external rim supports high-speed cornering stability and precise control during sprints.
- Endurance Rides: Reduced rotational mass lowers fatigue over long distances; the hand-built structure supports long-term trueness and easy serviceability.
- Climbing: At 1,190g, this setup balances efficient roll with swift climbing response compared to heavier, deeper-profile wheelsets.
Comparison Table: Tubular vs. Clincher Carbon Racing Wheelsets
| Feature | 38mm Tubular (This Model) | Typical 38mm Clincher |
|---|---|---|
| Weight (pair) | ~1,1190g | ~1,350-1,450g |
| Tire Fit | Tubular (glued) | Clincher/Tubeless |
| Ride Feel | Supple, responsive | Stiff, easier maintenance |
| Brake Type | Rim, caliper | Rim, disc |
| Serviceability | Pro-level, requires glue/tape | Consumer/easier roadside fix |
Key Technical Considerations
- Hand-Built Quality: Each wheelset is trued and tensioned for precise spoke balance, improving long-term durability and service life.
- Sapim CX-Ray Bladed Spokes: Chosen for their balance of tensile strength, low weight, and aero performance; in line with industry best practices.
- DT Swiss 350 Hubs: Proven bearing longevity and readily available service parts support a full life cycle of ownership.
Frequently Asked Questions
Are 38mm carbon tubular wheels suitable for both climbing and flat races?
Yes. The 38mm profile combines aerodynamic benefits for flat/rolling stages with a reduced weight (1,190g) that improves climbing response. Riders often favor this setup for mixed parcours.
What is the weight advantage of tubular carbon wheels vs. clincher?
This tubular model weighs ~1,190g per set, typically 100-200g less than similar-depth clincher wheelsets, enhancing acceleration and reducing fatigue over long distances.
Can I use these wheels for criterium and endurance racing?
Yes. The 25mm external width supports stable handling at high speeds, and the fatigue-tested carbon rim meets UCI and ISO safety standards for various race formats.
What should I know about Sapim CX-Ray spokes?
CX-Ray spokes offer high tensile strength and fatigue life, with a bladed profile for both aerodynamic and structural advantages; widely used in pro-level builds.
How should the wheelset be maintained?
Periodically check spoke tension and wheel trueness. Clean the rim brake track with isopropyl alcohol, and do not store in high-heat environments to protect carbon integrity.
