Bola ST 40T DT Swiss 350S Carbon Road Wheelset – 40mm Tubular, 25/28mm Wide, 1200g
Bola ST 40T DT Swiss 350S Carbon Road Wheelset – 40mm Tubular, 25/28mm Wide, 1200g
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The Bola ST 40T DT Swiss 350S Carbon Road Wheelset offers a 40mm rim depth, 1200g set weight, and certified Toray T700/T800 carbon construction to deliver reliable aerodynamic performance for road cyclists. With both 25mm and 28mm width options, it balances speed and climbing efficiency while supporting a wide tire range—making it well-suited for endurance rides, training, or as a cost-effective upgrade from aluminum wheels.
Key Features & Specs
- Rim Depth: 40mm (aerodynamic mid-depth for speed and stability in crosswinds)
- Rim Width: 25mm or 28mm (internal; supports 25c–30c tubular tires for tailored ride feel)
- Total Weight: 1200g ±20g/set (excludes accessories; suited for climbing and acceleration)
- Material: Toray T700/T800 unidirectional carbon fiber rims with Sapim CX Ray spokes
- Hub System: DT Swiss 350S (proven endurance, smooth engagement, easy servicing)
- Brake Type: Rim brake (tubular; classic road setup)
- Rider Weight Limit: Certified up to 100kg (EN 14781 tested)
- Intended Use: Road cycling, sportive, amateur and intermediate racing, training
- Warranty: 2 years manufacturer coverage for defects
How it Compares
| Feature | Bola ST 40T DT Swiss 350S | Performance Competitor Model |
|---|---|---|
| Rim Depth | 40mm (tubular, rim brake) | 40mm (most use clincher/tubeless, disc brake) |
| Width Options | 25mm / 28mm | Typically 25mm internal (limited width range) |
| Total Wheelset Weight | 1200g ±20g | ~1177g (claimed disc version) |
| Hub | DT Swiss 350S (star ratchet) | DT240 EXP / Ratchet upgrade (faster engagement) |
| Brake Compatibility | Rim brake (tubular) | Disc brake, tubeless-ready |
| Certification | EN 14781 / 100kg limit | ETRTO, max ~100kg |
| Warranty | 2 years (manufacturer support) | Standard 2 years or less |
Recommended Use Cases
- Endurance road cycling events requiring both climbing efficiency and aero performance
- Amateur or intermediate cyclists upgrading from aluminum wheels to improve speed and responsiveness
- Cyclists needing a lightweight carbon wheelset for rolling, hilly, or mixed-terrain road rides
- B2B shops seeking quality carbon wheels with stable global supply and rider-rated after-sales support
- Competitive training rides where reduced rotating mass improves acceleration
Frequently Asked Questions
Are 40mm carbon wheelsets good for both climbing and flat road cycling?
Yes. A 40mm rim strikes a balance between moderate aerodynamic benefit for flats/descents and a low enough profile for responsive climbing. At 1200g, the Bola ST 40T offers low rotational mass suitable for mixed profiles without the crosswind drawbacks of deeper rims.
What are the benefits of a 1,200g tubular rim brake wheelset for endurance rides?
At 1200g, the wheelset reduces overall bike weight, aiding climbing stamina and accelerating more efficiently over long distances. Tubular setups offer a distinct ride quality and lower puncture risk for certain riders. Braking surface and rim construction are optimized for sustained reliability during extended use.
How does a 25mm vs 28mm wide carbon road wheelset affect performance?
A 25mm wide rim provides a classic feel and works well with 25c–28c tires for reduced weight and aero benefits. A 28mm rim increases tire volume, improving comfort and grip, especially on rougher surfaces or with 28c-30c tires. Bola offers both for customized riding experiences.
Is a 40mm rim brake carbon wheelset a good upgrade from aluminum wheels?
For most riders, upgrading to a carbon 40mm rim brake wheelset lowers weight, enhances stiffness and aerodynamics, and delivers a more responsive road feel compared to standard aluminum wheels. The Bola ST 40T is engineered for those seeking a noticeable uplift in ride quality and speed without excessive cost.
Which lightweight road wheelset is best for riders up to 100kg?
The Bola ST 40T DT Swiss 350S wheelset is EN 14781 certified for riders up to 100kg, with reinforced spoke lacing and premium carbon to ensure structural integrity and long-term reliability within this limit.
