700C Carbon Gravel & Cyclocross Rim — 35mm Tubeless-Ready
700C Carbon Gravel & Cyclocross Rim — 35mm Tubeless-Ready
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The Bola 700C V-section carbon gravel/cyclocross rim — a 35mm-deep, 30mm-wide disc hoop (330-400g) built for gravel and CX.
Stable across the rough: a 35mm V-section delivers a steady shape on exposed gravel sectors and crosswinds, while a 30mm outer width supports modern wide tires.
Buying Guide.
Weight tier - Ultralight ~330g: the gravel-race and CX build for lighter riders who want spin-up speed.
Weight tier - Superlight ~360g: the race-and-training balance.
Weight tier - Standard ~400g: the Light-grade durability build for rough gravel and loaded miles.
Internal width - 24mm hooked: a broader 27-42c platform - choose it for tube compatibility and a slightly faster feel.
Internal width - 25mm hookless: a wider 29-44c low-pressure platform - choose it for plush gravel and cyclocross.
Same-family: the dedicated gravel/CX 35mm - the 40mm gravel rim ($310) adds aero, the 30mm rim adds comfort.
Rated to a 105kg system weight.
Target Audience & Usage Notes.
Gravel racing, cyclocross, bikepacking and gran fondo.
Max system weight 105kg; not downhill or heavy trail.
Disc only (Center Lock or 6-bolt).
The Ride That Awaits.
Pin it into a cyclocross turn and feel the V-section shrug off the crosswind - steadier than a deep rim, wider than a race hoop, built for exposed gravel. The tubeless clincher beds wide tires cleanly and holds its line through long races. Pick your inner width and layup; a 3-year rim warranty has you covered.
Specifications
- Material: Carbon
- Rim depth: 35mm
- External width: 30mm
- Internal width: 24mm or 25mm
- Size: 700C
- Profile: V-section
- Weight Tier: 330g-400g
- Max Tire Pressure: 90
Trade-offs & Considerations
- Aero vs Climbing: The 35mm depth offers a good balance between aerodynamic efficiency and low weight (330-400g). On steep climbs, the modest depth minimizes rotational weight, while still providing some aero benefit on flats.
- Tire Volume vs Speed: With internal widths of 24mm and 25mm, you can run tires from 33c to 50c. Wider tires improve comfort and grip, but may reduce aerodynamics; however, the 30mm outer width helps maintain a smooth transition.
- Stiffness vs Compliance: The carbon laminate is engineered to be laterally stiff (≥8N/mm) for precise handling, while the 35mm profile allows some vertical flex for comfort over rough gravel. It's a trade-off between responsiveness and ride quality.
- Crosswind vs Aero: The 35mm depth and 30mm outer width make the rim stable in crosswinds, reducing the need for constant correction. It's a compromise between aero gains and handling confidence, especially on exposed sections.
Performance Test Data
- Fatigue Test: 750,000 cycles @640N (ISO 4210-7 Annex A, informative only)
- Impact Resistance: >40J (ISO 4210-7 reference)
- Flatness: <0.25mm (internal QC)
- Roundness: <0.3mm (internal QC)
- Max Spoke Tension: >300kg (internal QC)
- Ultimate Strength: >100kg (internal QC)
- Dynamic Equilibrium: <3g (internal QC)
- Radial Stiffness: 90–110 N/mm (internal lab)
- Lateral Stiffness: ≥8N/mm
- Max System Weight: 105kgs
Recommended Use Cases
- Gravel Racing: Excellent
- Bikepacking: Good
- Gran Fondo / Endurance: Good
- Road Racing: Suitable
- Training / Daily Riding: Good
- Not Recommended For: Not recommended for downhill or heavy trail use
Compatibility
- Frame Compatibility: Disc-brake road, gravel, or cyclocross frames with 700c wheel size
- Tire Type: Tubeless clincher
- Tire Width Range: 27c-44c depending on internal width (24mm: 27c-42c; 25mm: 29c-44c)
- Brake Standard: Disc brake only
- Drivetrain: Compatible with any cassette or drivetrain
- Rotor Standard: Center-lock or 6-bolt
How It Compares
| Model | Hub | Spoke | Bearing | Weight | Depth | Width | Price |
|---|---|---|---|---|---|---|---|
| Gravel Rim 35 | - | - | - | 330-400g | 35mm | 24mm or 25mm | see store |
| 35 Carbon Gravel X Wide | - | - | - | 365g | 35mm | 25mm | ~$400 |
| 35 GR | - | - | - | 395g | 35mm | 25mm | ~$600 |
| Strade | - | - | - | 380g | 35mm | 24mm | ~$350 |
FAQ
How do I set up this rim tubeless?
Use a tubeless valve (6.5mm hole) and tubeless tire sealant. Mount the tire, inflate to seat the bead, then add sealant. Recommended pressure is 30-50 psi depending on tire width and rider weight.
What tire sizes are compatible with the 24mm internal width?
The 24mm internal width is ideal for 33c-42c tires. For 40c-50c, choose the 25mm internal width. Always check tire manufacturer's recommended rim width range.
How much weight can I save with these rims?
Each rim weighs 330-400g, saving 100-200g per rim compared to alloy versions. For a wheelset, you could save over 400g, improving acceleration and climbing.
Can I build a custom wheelset with these rims?
Yes, the rims are designed for custom builds. They are disc-brake compatible and work with center-lock or 6-bolt hubs. Spoke tension is certified above 280kgf, ensuring reliable builds.
How do I maintain and inspect carbon rims?
Regularly check for cracks, delamination, or impact damage. Clean with mild soap and check spoke tension. Avoid excessive braking heat, though these rims are rated for disc brakes. Always follow torque specs when mounting tires.
Warranty & Shipping
- Warranty Period: 3 years for rims / 2 years for wheelsets
- Warranty Coverage: Manufacturing defects on carbon structure
- Crash Replacement: 30% discount within warranty period
- Processing Time: 1–3 business days; 7–15 business days for custom or out-of-stock items
- Shipping Method: FedEx / UPS / DPD Economy (free, duties & VAT included) · Expedited option at checkout (duties & VAT payable on delivery)
- Estimated Delivery:Economy 7–20 business days · Expedited 3–7 business days, excluding customs clearance
- Packaging: Double-wall carton with foam protection
