Bola PRM 50R 700C Carbon Disc Wheelset – 50mm Tubeless, Blade Carbon Spokes, 1230g
Bola PRM 50R 700C Carbon Disc Wheelset – 50mm Tubeless, Blade Carbon Spokes, 1230g
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The Bola PRM 50R 700C carbon disc wheelset delivers 50mm mid-depth aerodynamics, only 1230g weight, and blade carbon spokes for enhanced acceleration and ride stability. Designed for both road and gravel scenarios, it supports tubeless tires and is ISO certified, offering riders an optimized balance of speed, versatility, and reliability.
Key Features & Specs
- Rim Depth: 50mm mid-profile for aerodynamic performance and crosswind control
- Internal Width: 21mm (road), 24mm (gravel/CX) – supports wider, modern tires
- External Width: 28mm or 30mm to fit a range of tire sizes
- Total Weight: 1230g (set, without tape/valves)
- Spokes: 20F/20R, straight-pull, blade carbon, 2-cross lacing
- Compatibility: Disc brake only; tubeless-ready clincher design
- Certifications: ISO 4210-7, REACH compliant
- Material: Toray carbon rims, in-house engineered hubs
- Warranty: 24-month global coverage; crash replacement policy
How it Compares
| Feature | Bola PRM 50R | Mid-High Performance Model (e.g., HUNT 50 Carbon Disc) |
|---|---|---|
| Rim Depth | 50mm mid-profile | 50mm U/V profile |
| Internal Rim Width | 21mm (road), 24mm (gravel/CX) | 22–23mm (road; some models only) |
| Total Weight | 1230g (no tape/valves) | 1450g–1550g |
| Spokes | Blade carbon spokes | Sapim CX-Ray steel spokes |
| Compatibility | Road & gravel, tubeless-ready | Primarily road, tubeless-ready |
| Certifications | ISO 4210-7, REACH | None specified (varies) |
| Warranty | 24 months, crash replacement | 12–36 months, brand dependent |
| Retail Price | Factory-direct, cost-effective | Mid-high retail + brand markup |
Recommended Use Cases
- Upgrading endurance road bikes for faster rolling and improved comfort over long distances
- Boosting gravel bike efficiency on mixed terrain with 24mm wide tubeless set-up
- Disc brake, tubeless conversion for increased puncture resistance and lower rolling resistance
- Racing or training with rapid acceleration and maintained stability in crosswinds (50mm rim)
- OEM/custom builds for retailers needing a reliable, all-conditions carbon option for resale
Frequently Asked Questions
Are 50mm carbon disc wheels good for both road and gravel riding?
Yes. The Bola PRM 50R features both 21mm and 24mm internal rim widths, making it compatible with modern road and gravel tires. ISO 4210-7 and REACH compliance ensure structural reliability across both riding conditions.
What is the actual weight advantage of a 1230g carbon wheelset for racing?
At 1230g (set, no tape/valves), this wheelset is among the lightest in the 50mm disc segment. Factor in acceleration and climbing efficiency—lighter wheels reduce rotational mass, contributing to noticeable improvements in sustained efforts and rapid transitions, which benefits both competitive and endurance riders.
How do blade carbon spokes on Bola PRM 50R compare to Sapim CX Ray spokes?
Blade carbon spokes deliver lower aerodynamic drag and increased lateral stiffness compared to steel spokes (e.g., Sapim CX Ray), with further weight reduction. Carbon spokes are ideal for riders seeking a reactive, high-efficiency feel for competitive use. Sapim CX Ray steel spokes are proven for durability and compliance, but typically add 80–100g per wheelset.
Is the tubeless-ready 21mm/24mm inner width suitable for 32mm tires?
The 21mm internal is optimized for 28–32mm tires—ideal for endurance and all-road setups. The 24mm version accommodates 32–48mm tires for gravel/CX use. Always refer to tire manufacturer ETRTO guidelines for bead seat compatibility.
What performance benefit does a blade carbon spoke offer on 50mm carbon wheels?
Blade carbon spokes reduce turbulence at the spoke interface and provide a direct, responsive wheel feel. This translates to improved power transfer during accelerations, stiffer wheel build, and marginally better crosswind handling at higher speeds.
