Carbon Fiber Sporting Goods
Bola PRM 50G Carbon Disc Gravel/Road Wheelset 700C – 50mm Deep, 28-32mm Internal Width, Tubeless, Blade Carbon Spokes
Bola PRM 50G Carbon Disc Gravel/Road Wheelset 700C – 50mm Deep, 28-32mm Internal Width, Tubeless, Blade Carbon Spokes
Made to Order — Handling time: within 15 days
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The Bola PRM 50G Carbon Disc Wheelset is optimized for high-efficiency gravel, cyclocross, and road cycling, balancing a 50mm aerodynamic rim depth with wide 28/30/32mm internal widths. T800 carbon construction and straight-pull blade carbon spokes provide lightweight durability and direct power transfer, proven by real-world race, endurance, and mixed-terrain use cases.
Technical Specifications
- Rim Depth: 50mm
- Internal Width: 28mm, 30mm, 32mm (external 34-38mm)
- Weight (set): 1250g (28/30mm), 1290g (32mm), w/o tape/valves
- Spokes: 20/20, 2-cross pattern, straight-pull blade carbon
- Material: T800 UD matte carbon fiber rim
- Hub: Aluminum BL300, Enduro bearings, 54T ratchet, Center Lock disc, 12x100 / 12x142mm thru-axle, QR compatible
- Certifications: ISO 4210-7, REACH-compliant
- Tire Compatibility: Tubeless-ready, supports 28–50mm tires
Performance & Real-World Use Cases
- Mixed Terrain & Endurance: Wide rim options improve tire volume and sidewall support for enhanced grip, impact resistance, and comfort on rough gravel or cyclocross courses.
- Road Speed & Stability: 50mm deep aero profile reduces drag for high-speed and long-distance road riding, while lightweight build improves climbing and accelerations.
- Custom Builds: Three rim width options allow precise tire/rider matching. The wide, tubeless platform supports modern, large-volume tires for stability on variable surfaces.
- Sustainability: Designed with performance lifecycle and quality control in mind, in line with Bola Carbon's focus on durable, sustainable products.
Comparison Table
| Feature | Bola PRM 50G | HUNT 50 Carbon | Reserve 40|44 GR |
|---|---|---|---|
| Rim Depth | 50mm | 50mm | 40/44mm |
| Internal Width | 28/30/32mm | 22mm | 27mm |
| Weight (set) | 1250–1290g | ~1464g | ~1510g |
| Spokes | Blade carbon, 20/20 | Steel, 24/24 | Steel, 24/24 |
Frequently Asked Questions
Are wider 50mm deep carbon gravel wheelsets good for both road and cyclocross riding?
Yes. The 50mm depth and 28-32mm inner width are designed for use on both pavement and variable off-road terrain, offering stable handling and reduced rolling resistance for road, gravel, or cyclocross bikes within a 28–50mm tire range.
How does a lightweight carbon wheelset with blade spokes compare to alloy wheels for climbing performance?
The Bola PRM 50G, weighing 1250–1290g with carbon blade spokes, offers lower rotating mass and higher power transfer than most comparable alloy wheels. This translates to improved acceleration and climbing efficiency for competitive and endurance cyclists.
What’s the best tubeless ready carbon wheelset width for gravel bikes with 28mm to 45mm tires?
The multiple width options (28/30/32mm internal) allow precise matching to tire size and rider use case, maximizing sidewall support, grip, and air volume for mixed-surface and gravel cycling.
Will a 50mm carbon disc wheelset improve speed and stability on long road rides?
Yes. The 50mm rim profile enhances straight-line speed via aerodynamic gains and keeps bike handling stable at higher velocities, while low total weight reduces fatigue on long rides.
Is a 30mm+ inner width carbon bike wheel better for gravel and CX cycling?
For technical gravel and cyclocross, rims with internal width of 30mm or greater permit a more optimal tire shape, higher air volume, and improved comfort and cornering grip on rough surfaces compared to narrower alternatives.
