Carbon Fiber Sporting Goods
Bola ULT 40R 700C Carbon Disc Road & Gravel Wheels – 40mm, 28/30mm Wide, Tubeless 1210g
Bola ULT 40R 700C Carbon Disc Road & Gravel Wheels – 40mm, 28/30mm Wide, Tubeless 1210g
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The Bola ULT 40R is a high-performance 700C carbon wheelset designed for both road and gravel cyclists seeking aerodynamic efficiency, precision handling, and reliable tubeless-ready construction. With a 40mm rim depth, 28/30mm external and 21/24mm internal widths, and weighing just 1210g (+/-30g), it offers a balance of low rotational weight and stability across varied conditions.
Key Features
- Rim Depth: 40mm mid-profile increases aerodynamic efficiency for road and endurance riding.
- Internal/External Widths: 21mm or 24mm internal; 28mm or 30mm external optimizes for 28-48mm tire compatibility.
- Material: T800 UD matte carbon rim, aluminum BL180 hub, Sapim CX-Ray stainless steel spokes.
- Weight: 1210g (set, without tape/valves). Lightweight build supports rapid acceleration and reduced fatigue.
- Spoke Count: 24 spokes (front and rear), 2-cross lacing for torsional strength.
- Hub System: BL100 with TPI ceramic bearings, 54T ratchet, Center Lock disc, compatible with 12x100mm and 12x142mm thru-axles and QR.
- Tubeless Ready: Supports 28–48mm tubeless tires for flexibility across road and gravel surfaces.
- Certifications: ISO 4210-7, REACH-compliant for tested quality and safety.
- Warranty: 24 months limited coverage.
Comparison Table
| Model | Weight | Rim Depth | Internal Width | Tubeless | Main Use |
|---|---|---|---|---|---|
| Bola ULT 40R | 1210g | 40mm | 21/24mm | Yes | Road, Gravel |
| Competitor AR40 | Approx. 1290g | 40mm | 25mm | Yes | All-Road |
| Competitor 40|44 GR | Approx. 1320g | 40/44mm | 27mm | Yes | Gravel |
Use Cases & Trade-offs
- Versatile Performance: Compatible with a wide range of bikes and tire sizes for all-road or gravel events.
- Lightweight vs. Strength: Advanced T800 carbon maintains durability with a sub-1250g weight class, though heavier riders or aggressive off-road conditions may benefit from reinforced models.
- Hub Engagement: The TPI ceramic bearing with 54T ratchet excels in responsiveness and durability but may require periodic maintenance for best results.
Frequently Asked Questions
Are these 40mm carbon road wheels good for both gravel and road cycling?
Yes, the Bola ULT 40R is designed with 21/24mm internal widths and robust carbon layup, making them suitable for both competitive road cycling and demanding gravel riding with optimal tire fit and ride quality.
How do 1210g T800 carbon disc brake wheels compare to other lightweight wheelsets?
At 1210g, these T800 carbon wheels are competitive with top-tier models, providing fast acceleration and responsive handling while maintaining strength for everyday and endurance use.
What tire widths work best with a 28mm or 30mm wide rim for tubeless setup?
The 28mm and 30mm external widths (21mm/24mm internal) are ideal for 28–48mm tires, allowing optimal tubeless performance and air volume for mixed road and gravel surfaces.
Is the TPI ceramic bearing hub with 54T ratchet worth it for performance and durability?
The TPI ceramic bearings offer low friction and high durability, while the 54T ratchet provides quick engagement. This improves responsiveness and reduces power loss, valued by both racers and endurance cyclists.
Will these wheels fit my road bike with 12x100 and 12x142mm thru-axles?
Yes, the Bola ULT 40R supports both 12x100mm (front) and 12x142mm (rear) thru-axle standards and also includes quick-release compatibility, fitting most modern disc brake road and gravel bikes.
