Bola 700C 35mm Carbon Tubular Rim | 25mm Wide Road XC
Bola 700C 35mm Carbon Tubular Rim | 25mm Wide Road XC
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The Bola 700C U-profile carbon tubular rim — a 35mm-deep, 28mm-wide featherweight (295g) built for glued tubular climbing and road racing.
A featherweight 35mm tubular: at just 295g superlight (320g standard noted), this Bola tubular trades deep aero for climbing agility, with a 28mm outer suiting modern 23-28mm tubulars.
Buying Guide.
Weight tier - Superlight ~295g: a single-tier Ultralight climbing tubular - among the lightest in the range, for road racers and climbers who accept glued tires for spin-up speed.
Tire choice: glued tubulars only (23-28mm) - build it for climbs and crosswind-calmer road racing, not for off-road or commuting.
Adjacent depth: pair with the 50mm tubular ($310) for flats - this 35mm is the climbing/all-round tubular; the 60mm tubular goes deeper.
Rated to a 105kg system weight; rim-brake track.
Target Audience & Usage Notes.
Road racers, climbers and criterium riders who accept tubular gluing.
Not off-road or commuting.
The Ride That Awaits.
Mount the tubular, check the bond, and feel the featherweight rim rise with every climb - it spins up on the first stroke and the 35mm section stays calmer than a deep wheel when the wind gusts. Built for road racers and climbers who accept the glue for the grace. Build it light; the 3-year rim warranty backs your ascent.
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- Material: Toray UD carbon fiber
- Rim depth: 35mm
- External width: 28mm
- Internal width: N/A(Tubular)
- Size: 700C
- Profile: U-profile
- Weight Tier: Superlight 295g
- Max Tire Pressure: 85
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- Aero vs Climbing: The 35mm depth offers a compromise: it provides some aerodynamic benefit on flats while remaining light (295g) for climbing. This makes it versatile for varied terrains.
- Stiffness vs Compliance: Using Toray T700/T800 carbon fiber, the rim balances stiffness for efficient power transfer with enough compliance to smooth road vibrations, enhancing rider comfort on long rides.
- Tire Volume vs Speed: With a 28mm outer width, it supports 23-28mm tubular tires. Wider tires improve traction and rolling efficiency, though they may slightly increase aerodynamic drag compared to narrower setups.
- Weight vs Durability: The Superlight variant at 295g reduces rotational mass for quicker acceleration, but it may be less impact-resistant than heavier rims. Standard at 320g offers a bit more robustness.
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- 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
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- Climbing / Hill Repeats: Excellent
- Gran Fondo / Endurance: Good
- Road Racing: Excellent
- Sprinting / Criterium: Good
- Training / Daily Riding: Not recommended
- Not Recommended For: Off-road use, heavy riders, or daily commuting due to tubular tires and lightweight construction
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- Frame Compatibility: 700C road frames with rim brakes
- Tire Type: Tubular
- Tire Width Range: 28-40mm
- Brake Standard: Rim brake
- Drivetrain: N/A (rim only)
- Rotor Standard: N/A (rim brake)
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|---|---|---|---|---|---|---|---|
| 35mm Tubular | N/A | N/A | N/A | 295g | 35mm | N/A(Tubular) | see store |
| Aero 35mm Tubular | N/A | N/A | N/A | 310g | 35mm | 28mm | ~$700 |
| Lightweight 35mm | N/A | N/A | N/A | 295g | 35mm | 28mm | ~$800 |
| Race 35mm | N/A | N/A | N/A | 320g | 35mm | 28mm | ~$650 |
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Can I use this rim with tubeless tires?
No, this is a tubular rim designed for tubular tires that are glued onto the rim. It is not compatible with tubeless or clincher tires. Using tubeless tires will result in unsafe riding conditions.
What tire widths are compatible?
This rim is optimized for 23-28mm tubular tires. The 28mm outer width enhances the tire profile and traction, improving rolling efficiency on paved roads.
How much weight can I save compared to a standard aluminum rim?
This carbon rim weighs only 295g (Superlight) or 320g (Standard), which is significantly lighter than typical aluminum rims that weigh around 450-500g. This reduces rotational mass and improves acceleration.
Can I customize spoke drilling?
Yes, custom drilling is available to match your wheelbuilder's preferences and brake track requirements. The rim supports standard 4.5mm spokes.
How do I maintain carbon rims to avoid delamination?
Regularly inspect the rim for cracks, impact damage, or heat damage. Avoid excessive braking heat, which can degrade the resin. Keep the brake surface clean and avoid using abrasive pads. Follow the manufacturer's guidelines for proper tire mounting and inflation.
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