Bola PRM 45G 700C Carbon Gravel & Road Disc Wheelset – 45mm Depth, 28–32mm Wide, Blade Spokes, Tubeless
Bola PRM 45G 700C Carbon Gravel & Road Disc Wheelset – 45mm Depth, 28–32mm Wide, Blade Spokes, Tubeless
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The Bola PRM 45G is a 700C carbon disc wheelset engineered for versatile performance across gravel, cyclocross, and road scenarios. With 45mm deep T800 UD carbon rims, 28–32mm internal width options, and lightweight blade carbon spokes, it delivers an optimal mix of aerodynamics, stiffness, and adaptable tire support for riders seeking reliable upgrades without excessive cost or brand premium.
Key Features & Specs
- Wheel Size: 700C (ISO 622)
- Rim Depth: 45mm aerodynamic profile for speed and crosswind stability
- Internal Rim Width: Choice of 28mm, 30mm, or 32mm (external 34–38mm) for wide tire compatibility
- Rim Material: Premium Toray T800 unidirectional (UD) matte carbon fiber
- Weight (set): 1250g (28/30mm), 1290g (32mm), measured without tape/valves
- Spokes: 20 front / 20 rear, 2X straight-pull carbon blade spokes for lateral stiffness and reduced drag
- Hub System: Bola BL350 CNC aluminum hub, Enduro sealed bearings, 54T ratchet (6.7°) quick engagement, Center Lock disc mount
- Axle Compatibility: 12x100mm (front), 12x142mm (rear) thru-axle compatible
- Tire Setup: Tubeless-ready, supports 28–50mm tires for variable terrain and lower pressures
- Testing & Compliance: Manufactured under ISO 4210-7, REACH compliant
- Warranty: 24-month manufacturer warranty; crash replacement included under Bola policy
How it Compares
| Feature | Bola PRM 45G | Premium Model (e.g., GCX Hyperlight) |
|---|---|---|
| Rim Depth | 45mm | 40/44mm mixed |
| Internal Width | 28–32mm (multiple options) | 25–30mm |
| Spokes | Full carbon blade (20/20) | 4th gen carbon (variable count) |
| Hub Engagement | 54T ratchet (6.7°) | Star ratchet/ceramic option |
| Weight (set) | 1250g–1290g | 1040g–1200g |
| Hooked/Hookless | Hooked (standard) | Hooked/Hookless |
| Tubeless Support | Yes (28–50mm tires) | Yes (up to 50mm) |
| Warranty | 24 months | Lifetime (select brands) |
| Intended Use | Gravel, road, cyclocross | Gravel race/road |
| MSRP | Factory-direct pricing | High-premium pricing |
Recommended Use Cases
- All-road and gravel endurance rides requiring aerodynamic efficiency and weight savings
- Mixed-terrain events (gravel races, gran fondos, cyclocross) demanding adaptable tire widths and high lateral stiffness
- Upgrade solution for stock alloy or entry-level carbon wheelsets on road, cyclocross, or adventure bikes
- B2B retail, OEM, or dropshipping supply seeking cost-effective premium carbon wheelsets with reliable support
- Aftermarket replacement for bike modifiers pursuing enhanced speed, reduced rolling resistance, and consistent braking performance
Frequently Asked Questions
Are 45mm deep carbon gravel wheelsets good for both road and off-road riding?
Yes, a 45mm rim depth balances aerodynamic performance for road speed with enhanced crosswind stability and shock absorption for gravel and mixed surfaces. The Bola PRM 45G is built for both environments, accommodating 28–50mm tires for optimal grip and compliance.
What are the benefits of carbon disc wheelsets with blade carbon spokes for gravel bikes?
Blade carbon spokes provide high lateral stiffness and reduce vibration, resulting in responsive handling and better power transfer on variable terrain. Carbon fiber also resists corrosion and contributes to lower rotating mass versus steel or alloy spokes.
How do 28mm vs 32mm internal width carbon wheels affect ride quality and tire choice?
Wider internal widths (up to 32mm) support larger volume tires, resulting in improved traction and comfort over loose surfaces. 28mm internal is best for 28–38mm tires favored in all-road and racing; 30–32mm accommodates modern 40–50mm gravel tires for greater versatility.
Is a lightweight 1250g carbon road wheelset durable enough for rough gravel terrain?
With premium T800 carbon, reinforced spoke beds, and strict QC under ISO 4210-7, Bola PRM 45G offers structural durability while maintaining low weight. Alloy hubs with Enduro bearings are designed for sustained off-road use, with a 24-month manufacturing warranty for peace of mind.
Are tubeless-ready carbon wheels with 54T ratchet hubs worth the investment for cyclocross?
The 54T ratchet system offers fast engagement for technical starts and accelerations, while tubeless setup allows lower tire pressures for traction and puncture resistance—key benefits for cyclocross and mixed courses.
