Carbon Fiber Sporting Goods
Bola ULT 40R 700C Carbon Disc Wheelset – Road & Gravel, Tubeless, 40mm, 1210g
Bola ULT 40R 700C Carbon Disc Wheelset – Road & Gravel, Tubeless, 40mm, 1210g
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The Bola ULT 40R 700C Carbon Disc Wheelset offers a balanced combination of low rotational mass, wide tire support, and durable tubeless-ready design, engineered for both road and gravel cycling. With 40mm rim depth and 28/30mm external width options, these wheels enable responsive handling, aerodynamic efficiency, and optimized tire fit for modern endurance and mixed-surface applications. Built from T800 unidirectional matte carbon and equipped with TPI ceramic bearing hubs and Sapim CX-Ray stainless steel spokes, this wheelset weighs a verified 1210g (set, ±30g) and is REACH compliant and ISO 4210-7 tested. Compatible with 12x100mm (front) and 12x142mm (rear) thru-axles, as well as quick-release setups. Supports tire widths from 28mm up to 48mm for reliable tubeless performance.
Why Choose Bola ULT 40R 40mm Carbon Disc Road Gravel Wheels?
- Rim Depth: 40mm mid-profile for aerodynamic stability in road and endurance settings
- Internal Width: 21mm or 24mm; External Width: 28mm or 30mm (selectable, accommodates 28–48mm tires)
- Material: T800 UD matte carbon rim, aluminum BL180 hub, Sapim CX-Ray stainless steel spokes (24 front/rear, 2-cross lacing)
- Weight: 1210g per set (excludes tape/valves)
- Hub Details: BL180 w/ TPI ceramic bearings, 54T ratchet, Center Lock disc, QR/12mm
- Tubeless Ready: Yes; supports 28–48mm tubeless tire widths
- Certifications: ISO 4210-7, REACH compliant
- Warranty: 24 months (limited)
Comparison Table: Bola ULT 40R vs Leading Models
| Model | Weight | Rim Depth | Internal Width | Tubeless | Main Use |
|---|---|---|---|---|---|
| Bola ULT 40R | 1210g | 40mm | 21/24mm | Yes | Road, Gravel |
| AR40 | 1290g | 40mm | 25mm | Yes | All-Road |
| Reserve 40|44 GR | 1320g | 40/44mm | 27mm | Yes | Gravel |
Performance Use Cases & Trade-Offs
- Versatility: Compatible with endurance road, gravel, and all-road bikes; internal width fits wide tires for improved traction off-pavement
- Lightweight Strength: T800 carbon construction under 1250g; suitable for high-cadence acceleration and long-distance events; heavier riders or aggressive off-road may prefer reinforced options
- Hub Responsiveness: 54T ceramic ratchet hub offers quick engagement—ideal for mixed terrain, but periodic service advised for peak durability
Frequently Asked Questions
Are these 40mm carbon road wheels good for both gravel and road cycling?
Yes, the Bola ULT 40R features a balanced combination of rim width, durable carbon layup, and tubeless compatibility, supporting both aggressive road riding and technical gravel surfaces. Suitable for competitive, endurance, and all-road cyclists.
How do 1210g T800 carbon disc brake wheels compare to other lightweight wheelsets?
The ULT 40R’s 1210g verified weight aligns with performance-focused competitors in the same segment, supporting fast acceleration, reduced rotational inertia, and efficient climbing. Comparable to Reserve 40|44 GR and AR40 models by metrics and rider consensus.
What tire widths work best with a 28mm or 30mm wide rim for tubeless setup?
For optimal tubeless setup, the 28mm and 30mm external (21/24mm internal) rim widths accommodate 28–48mm tires, promoting secure bead fit and air volume stability on both paved and off-road routes.
Is the TPI ceramic bearing hub with 54T ratchet worth it for performance and durability?
TPI ceramic bearings and the 54-tooth ratchet system reduce friction and provide rapid power engagement, supporting responsive handling and rider efficiency. This feature offers real-world performance gains and matches advanced competitor designs, though it benefits from regular hub servicing.
Will these wheels fit my road bike with 12x100 and 12x142mm thru-axles?
The Bola ULT 40R wheelset is compatible with 12x100mm front and 12x142mm rear thru-axles as well as QR set-ups, fitting the most common modern disc brake road, gravel, and all-road bikes. Confirm your frame’s dropout specs before ordering.
Lightweight and Durable Carbon Construction
The Bola ULT 40R 700C wheelset is designed with advanced carbon fiber materials, providing riders with a perfect balance of lightweight performance and durability. Weighing just 1210 grams, these wheels reduce rotational weight, allowing for faster acceleration on both road and gravel surfaces. The carbon construction not only enhances stiffness but also improves vibration damping, making rides smoother and more comfortable across various terrains. These 40mm carbon disc road gravel wheels excel in strength without compromising speed or handling.
Tubeless Ready for Superior Ride Quality
These Bola ULT 40R wheels come tubeless ready, enabling cyclists to run lower tire pressures without the risk of pinch flats. This feature vastly improves traction and comfort on rough gravel roads and rolling tarmac sections alike. Tubeless setups also reduce overall weight by eliminating the inner tube and offer better rolling efficiency. Whether tackling challenging gravel paths or swift road sprints, these 40mm carbon disc road gravel wheels deliver consistent performance and reassurance against punctures.
Optimized 40mm Rim Profile for Versatility and Speed
The 40mm rim depth on the Bola ULT 40R wheelset provides an ideal aerodynamic advantage without adding excess weight, making it suitable for mixed terrains. This rim height is particularly effective for road and gravel cyclists seeking a fast, responsive wheelset that handles crosswinds better than deeper rims. The thoughtful design also enhances braking performance with disc compatibility and improves overall handling and control. For riders looking to upgrade their wheelset, these 40mm carbon disc road gravel wheels offer a perfect combination of speed, stability, and versatility.
