Bola ULT 50R 700C Carbon Disc Wheelset, 50mm Aero/Tubeless, 1250g
Bola ULT 50R 700C Carbon Disc Wheelset, 50mm Aero/Tubeless, 1250g
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The Bola ULT 50R 700C Carbon Disc Wheelset offers balanced performance for both road racing and gravel cycling, combining a 50mm aerodynamic rim profile with lightweight T800 carbon fiber, robust 21/24mm internal widths, and proven 1250g total weight. Built to meet rigorous ISO safety standards, this wheelset delivers rapid acceleration, optimized tubeless setup, and fatigue reduction for multi-surface riding and endurance events.
Key Features & Specs
- Rim Material: Toray T800 unidirectional matte carbon fiber
- Rim Depth: 50mm aerodynamic, mid-profile
- Rim Widths: Internal 21mm or 24mm; External 28mm or 30mm
- Wheel Size: 700C (622mm ETRTO)
- Total Weight: 1250g (±2%) per set
- Spokes: Sapim CX-Ray stainless steel, aero bladed
- Hubs: BL180 alloy, TPI ceramic bearings, 54T ratchet driver
- Tubeless Compatibility: Supports 28–48mm tubeless tires
- Braking Interface: Disc brake, Center Lock mount
- Certifications: ISO 4210-7 road safety standard, REACH-compliant materials
- Warranty: 24 months manufacturer warranty
How it Compares
| Feature | Bola ULT 50R | Premium Model (e.g., OVERFAST 50mm, 1005g) |
|---|---|---|
| Rim Depth | 50mm | 50mm |
| Internal Rim Width | 21mm or 24mm | 22mm (typical) |
| External Rim Width | 28mm/30mm | 30mm–31mm |
| Total Weight | 1250g | 1005–1150g |
| Spoke Material | Sapim CX-Ray steel | Carbon spokes |
| Hub | BL180 w/ TPI ceramic, 54T ratchet | Precision hub, 36–54T ratchet |
| Tubeless Support | 28–48mm tires | 25–55mm (varies) |
| Certifications | ISO 4210-7, REACH | UCI, SCA, varied |
This wheelset provides a cost-effective balance of aero efficiency, multi-tire compatibility, and certified rider safety—without the brand premium or proprietary parts of flagship models. Weight is ~100–200g higher than models with carbon spokes but offers proven reliability and global warranty support.
Recommended Use Cases
- Road race events seeking aerodynamic efficiency and fast sprinting
- Long-distance endurance and sportive rides where low weight and comfort reduce fatigue
- Mixed-surface/gravel races and adventure rides requiring tubeless performance and broad tire options (28–48mm)
- Upgrade for stock alloy wheels to improve acceleration, handling, and stiffness
- Wholesaling or OEM/ODM supply for global retailers needing reliable, mid-depth carbon wheelsets with certified quality and support
Frequently Asked Questions
Are 50mm carbon disc wheels suitable for both road racing and gravel riding?
Yes, the Bola ULT 50R features a 50mm rim depth with 21/24mm inner width, supporting 28–48mm tires. This enables aerodynamic benefits for road and the volume/flex needed for gravel and all-road use, matching multi-scenario needs highlighted in standards like ISO 4210-7.
What advantages do lightweight tubeless carbon wheels offer for competition?
A 1250g wheelset with tubeless setup reduces rotational mass and rolling resistance, improving acceleration, traction, and comfort—especially in long races or variable surface conditions. Tubeless setups also decrease puncture risk at lower pressures.
How does the weight compare to other high-performance options?
The Bola ULT 50R (1250g) is close to the leading carbon disc wheels in its segment. Full carbon spoke models (e.g., OVERFAST) are 100–200g lighter but often use proprietary parts and cost significantly more. The Bola ULT balances performance, cost, and reliability with mainstream replaceable components.
Which rim width works best for 28–48mm tires?
21mm internal accommodates 28–32mm tires with precise fit for road or light gravel, while the 24mm variant offers better support and volume for 35–48mm tires, optimizing stability and ride comfort.
What wheelset should I choose to improve acceleration and reduce rider fatigue?
The Bola ULT 50R's low 1250g weight, ceramic hub bearings, and aero Sapim CX-Ray spokes are engineered for responsive acceleration and long-term comfort, confirmed by rider reviews and comparative industry testing.
