Carbon Fiber Sporting Goods
Bola ST 40T DT Swiss 350S Carbon Road Wheelset – 40mm Tubular Rim, 25/28mm Wide, 1200g
Bola ST 40T DT Swiss 350S Carbon Road Wheelset – 40mm Tubular Rim, 25/28mm Wide, 1200g
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The Bola ST 40T DT Swiss 350S Carbon Road Wheelset combines a 40mm rim depth and a lightweight 1200g set weight to deliver balanced aerodynamics and efficient climbing for road cyclists. Offering both 25mm and 28mm internal width options, it supports 25c–30c tires and is certified to EN 14781 for rider weights up to 100kg. Designed for rim brake tubular setups, the wheelset uses T700/T800 unidirectional carbon fiber, DT Swiss 350S hubs, and Sapim CX Ray spokes—engineered for both endurance and competitive cycling across rolling, flat, or hilly routes.
Bola ST 40T DT Swiss 350S: The Ultimate 40mm Carbon Road Wheelset
- Rim Depth: 40mm (optimizes aerodynamic drag and crosswind stability)
- Rim Width: 25mm or 28mm (supports 25c–30c tire range)
- Weight: 1200g ±20g/set (excluding accessories)
- Brake Type: Rim brake only, carbon braking surface
- Hubset: DT Swiss 350S (straight-pull, 20/24 spokes: Sapim CX Ray)
- Certification: EN 14781, 100kg rider max
- Construction: Tubular for minimized rotational mass
- Country of Origin: China
Performance Comparison Table
| Feature | Bola ST 40T DT 350S | Typical Aluminum Road Wheels |
|---|---|---|
| Weight (set) | 1200g ±20g | 1550–1700g |
| Rim Depth | 40mm | 20–25mm |
| Rim Width | 25mm / 28mm | 17–19mm |
| Tire Compatibility | 25c–30c (Tubular) | 23c–28c (Clincher) |
Real-World Use Cases
- Competitive road racing and time trial stages—low weight and aero profile support acceleration and high-speed efficiency.
- Mountain climbs—lighter rotating mass aids sustained ascending efforts.
- Endurance rides—reduces fatigue, certified up to 100kg rider weight, stable 40mm rim in variable wind.
- Upgrade from aluminum wheels—average 300–500g lighter, improved aerodynamics and lateral stiffness.
Known Tradeoffs
- Tubular setup requires gluing/taping tires and is preferred by experienced or competitive riders; not compatible with clincher or tubeless systems.
- Rim brake only—not suitable for disc brake bikes.
Frequently Asked Questions
Are 40mm carbon wheelsets good for both climbing and flat road cycling?
Yes. A 40mm depth provides balanced aerodynamic benefits for steady speed on flat roads, while the reduced rotational mass improves climbing acceleration. Competitor reviews (Hunt, ENVE, Zipp) confirm this all-around profile is the most versatile for mixed terrain and wind conditions.
What are the benefits of a 1,200g tubular rim brake wheelset for endurance rides?
At 1,200g, this wheelset reduces fatigue over long rides and enhances uphill performance by minimizing rotating mass. Tubular construction improves ride feel and grip, which is favored by endurance cyclists seeking comfort and responsiveness. This is validated by peer models from Light Bicycle and Farsports, tested for similar rider demands.
How does a 25mm vs 28mm wide carbon road wheelset affect performance?
25mm width is optimized for 25–28c tires, favoring aerodynamics and efficiency at higher speeds, while 28mm accommodates wider tires for increased comfort and lower pressure handling during endurance or mixed-surface rides. Competitor feedback (Hunt, Aero) reflects similar recommendations based on individual rider priorities.
Is a 40mm rim brake carbon wheelset a good upgrade from aluminum wheels?
Yes. Expect 300–500g weight savings, improved aerodynamic efficiency, and a stiffer ride feel versus most OEM aluminum wheels. Aluminum remains more user-friendly for maintenance and tire changes, but performance benefits of carbon are verified across leading wheel brands (e.g., Bola vs Zipp, Bola vs DT Swiss).
Which lightweight road wheelset is best for riders up to 100kg?
This model is tested to EN 14781, accommodating riders up to 100kg without sacrificing fatigue resistance or structural integrity. Professional and high-mileage cyclists benefit from this standards-backed durability used in major cycling brands' offerings.
Lightweight and Aerodynamic Design
The Bola ST 40T DT Swiss 350S 40mm carbon road wheelset is crafted for cyclists seeking a perfect balance between weight and aerodynamics. Featuring a 40mm tubular rim depth and a rim width of 25mm internal and 28mm external, this wheelset optimizes air flow and stability. Weighing just 1200 grams, it reduces rotational mass, which significantly enhances acceleration and climbing efficiency. This lightweight construction does not sacrifice durability, making it ideal for competitive road riding and long-distance events.
Durability and Precision with DT Swiss 350S Hubs
At the heart of the Bola ST 40T wheelset are DT Swiss 350S hubs, renowned for their reliability and smooth engagement. These hubs offer excellent precision engineering that ensures long-term durability and low maintenance. The sealed bearings protect against dirt and moisture, sustaining performance through various road conditions. The DT Swiss 350S hubs complement the carbon rims perfectly, giving riders a confident, responsive feel with every pedal stroke.
Optimized Tubular Rim for Peak Performance
The tubular rims on the Bola ST 40T are designed to maximize tire integration and ride comfort. The 40mm height improves aerodynamic efficiency by reducing drag, while the combined 25mm internal and 28mm external rim widths provide a stable tire profile for better cornering and braking. Tubular construction keeps the overall weight down and allows for superior ride quality, making this 40mm carbon road wheelset a top choice for enthusiasts committed to competitive racing and serious training.
