Carbon Fiber Sporting Goods
Bola ULT 50R 700C Carbon Disc Wheelset – 50mm, 21/24mm Inner, Tubeless Ready, 1250g
Bola ULT 50R 700C Carbon Disc Wheelset – 50mm, 21/24mm Inner, Tubeless Ready, 1250g
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The Bola ULT 50R 700C Carbon Disc Wheelset offers 50mm depth and 21mm or 24mm internal width options, delivering aerodynamic efficiency and versatile fit for both road and gravel riding. Engineered with T800 unidirectional matte carbon fiber rim, Sapim CX-Ray spokes, and BL100 hub with TPI ceramic bearings, this 1250g tubeless-ready set prioritizes rapid acceleration, reduced fatigue, and durable performance confirmed by ISO 4210-7 certification.
Technical Specifications
- Rim Depth: 50mm mid-profile for aerodynamic stability
- Rim Width: Internal 21mm or 24mm; External 28mm or 30mm — ideal for 28-48mm tires
- Weight: 1250g per set (without tape/valves)
- Spoke Count: 24 (front & rear), 2-cross lacing
- Hub: Aluminum BL100, TPI ceramic bearings, 54T ratchet, Center Lock disc, 12x100mm/12x142mm thru-axle or QR compatible
- Spokes: Sapim CX-Ray, stainless steel
- Material: T800 UD matte carbon rim
- Certification: ISO 4210-7, REACH-compliant
Use Case Comparison
| Feature | Bola ULT 50R | Typical Alloy Wheelset | Competitor Carbon 50mm |
|---|---|---|---|
| Weight (set) | 1250g | 1550-1800g | 1200-1350g |
| Rim Width (Int/Ext) | 21/24mm / 28/30mm | 17-19mm / 23-25mm | 21-25mm / 28-31mm |
| Tubeless Ready | Yes | Rare | Yes |
| Axle Compatibility | 12x100/12x142/QR | Quick release | 12x100/12x142/QR |
Real-World Benefits
- 50mm depth boosts aerodynamic efficiency for sustained speed in races and group rides.
- 21mm/24mm internal width accommodates 28-48mm tires — ideal for road racing and gravel versatility.
- 1250g total weight ranks among the lightest, reducing climbing fatigue and improving acceleration.
- Ceramic bearing hubs minimize drag and enhance durability under high-watt outputs.
- Tubeless-ready design enables lower pressures for better grip and fewer punctures on rough roads.
- ISO 4210-7 and REACH compliance ensure safety and material sustainability standards.
Frequently Asked Questions
Are 50mm carbon disc wheels suitable for both road racing and gravel rides?
Yes, Bola ULT 50R is engineered for multi-surface use. The 50mm profile balances aerodynamic benefit on road with tubeless, wide rim compatibility for gravel traction.
What benefits do tubeless ultralight carbon wheelsets offer for competitions?
Tubeless-ready carbon wheelsets like Bola ULT 50R reduce rolling resistance, allow lower tire pressures, and decrease puncture risk, improving performance and comfort during endurance or race conditions.
How does a 1250g 700C wheelset compare to other lightweight options?
At 1250g, Bola ULT 50R is comparable to elite carbon wheelsets. Lighter wheels accelerate quicker and reduce rider fatigue, verified in race data and peer review studies.
Should I choose 28mm or 30mm external rim width for 28-48mm tires?
28mm is optimal for 28-32mm tires with lower drag; 30mm offers more sidewall support for 35-48mm and gravel setups. Your choice should match primary tire width and terrain focus.
What makes Bola ULT 50R a good wheelset for reducing fatigue and improving acceleration?
The light T800 carbon construction, Sapim CX-Ray spokes, and ceramic bearings combine to minimize rotational mass and rolling friction, supporting sustained, fast accelerations and reducing end-ride leg fatigue.
