Bola 700C 40/45mm Wave Carbon Tubeless Road Rim | 28mm Wide
Bola 700C 40/45mm Wave Carbon Tubeless Road Rim | 28mm Wide
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The Bola 700C 40/45mm wave carbon road rim - a wavy 40/45mm aero rim with 28mm outer / 22mm internal width in four light tiers, for climbing and all-round aero builds.
A shallower wavy profile that pairs climbing legs with aero brains - proof that speed need not carry the weight of a deep-section albatross.
Buying Guide.
Weight tier - ~350g (Ultralight): the pure climber's pick for hill repeats and hilly races.
Weight tier - ~370g (Ultralight): the quick all-round race choice.
Weight tier - ~395g (Light): balanced for regular training and racing.
Weight tier - ~430g (Light): the durable end for heavier riders and rough roads.
Depth choice: pick 40mm for climbs and crosswinds, or 45mm for a little more flat aero.
Same-depth series: the 40mm 23mm UV rim ($310) and the 45mm 34/28mm wide rim ($310) cover adjacent road styles.
Adjacent depth: the 55/60mm wave rim ($310) adds flat aero; this 40/45mm rim stays light and nimble.
Target Audience & Usage Notes.
climbers, all-round racers and wheel builders.
Disc-brake road frames; 24-hole drilling. 110kg system weight.
Not for heavy off-road use.
The Ride That Awaits.
Lace it light and the rim accelerates like a sprinter off the blocks, climbing with you then sliding into the aero sweep.
The wave shape keeps it honest in the gusts.
Free shipping and a 3-year rim warranty close out a light, versatile package.
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- Material: Toray carbon
- Rim depth: 40/45mm
- External width: 28mm
- Internal width: 22mm
- Size: 700c
- Profile: Wave U-shaped
- Weight Tier: 350g, 370g, 395g, 430g
- Max Tire Pressure: 110psi
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- Aero vs Climbing: The 40mm depth offers a balance between aerodynamics and weight, while the 45mm depth provides more aero benefit but adds weight. Choose 40mm for climbing, 45mm for flat/aero courses.
- Weight vs Durability: Weight tiers range from 350g to 430g. Lighter rims are more responsive but may be less robust for heavy riders or rough roads. Heavier options (430g) offer added durability.
- Tire Volume vs Speed: The 28mm external width supports wider tires (28-32mm) for comfort and puncture resistance, but wider tires may increase rolling resistance. The 22mm internal width allows for tubeless setup and lower pressures.
- Crosswind vs Aero: Deeper rims (45mm) provide better aerodynamics but are more susceptible to crosswinds. The 40mm depth is a good compromise for windy conditions.
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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: <0.15mm (internal QC)
- Roundness: <0.3mm (internal QC)
- Max Spoke Tension: >280kg (internal QC)
- Ultimate Strength: >300kg (internal QC)
- Dynamic Equilibrium: <3g (internal QC)
- Radial Stiffness: 90–110 N/mm (internal lab)
- Lateral Stiffness: ≥8N/mm
- Max System Weight: 110
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- Climbing / Hill Repeats: Excellent
- Gran Fondo / Endurance: Excellent
- Road Racing: Excellent
- Sprinting / Criterium: Good
- Training / Daily Riding: Good
- Not Recommended For: Not recommended
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- Frame Compatibility: 700c road frames with disc brake mounts
- Tire Type: Clincher and tubeless
- Tire Width Range: 26-38mm
- Brake Standard: Disc
- Drivetrain: N/A
- Rotor Standard: N/A
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| Translation missing: en.product.metafields.model | Translation missing: en.product.metafields.hub | Translation missing: en.product.metafields.spoke | Translation missing: en.product.metafields.bearing | Translation missing: en.product.metafields.weight | Translation missing: en.product.metafields.depth | Translation missing: en.product.metafields.width | Translation missing: en.product.metafields.price |
|---|---|---|---|---|---|---|---|
| Bola | Disc | 24 | Not specified | 350-430g | 40/45mm | 22mm | see store |
| Hunt 40 Carbon Disc Rim | Not specified | 24 | Not specified | 450g | 40mm | 28mm | ~$250 |
| Reserve 40mm Carbon Rim | Not specified | 24 | Not specified | 445g | 40mm | 28mm | ~$700 |
| Parcours 40mm Carbon Rim | Not specified | 24 | Not specified | 440g | 40mm | 28mm | ~$350 |
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What is the recommended tire width for this rim?
The recommended tire width is 28-32mm. The 28mm external width and 22mm internal width support wider tires for comfort and puncture protection. Using wider tires may require adjusting tire pressure to 100-125 psi depending on tire choice.
How do I set up tubeless tires on this rim?
The rim is tubeless compatible with a 22mm internal width. You will need tubeless valves, sealant, and compatible tires. Ensure the rim tape is applied properly. The valve hole is 6.5mm standard, and custom options are available.
What are the weight savings compared to standard rims?
This carbon rim weighs between 350g and 430g depending on the tier. Compared to aluminum rims, which typically weigh 450-500g, you can save 50-150g per rim. The lighter options (350g) are ideal for climbing, while heavier ones offer more durability.
Can I build a custom wheelset with this rim?
Yes, the rim is designed for custom builds with 24 spoke holes. It is compatible with disc brake hubs. You can choose from four weight tiers to match your riding style. The rim is rated for riders up to 120kg and has a compressive strength of over 300kg.
What maintenance and inspection is required for this carbon rim?
Regularly inspect the rim for impact damage, delamination, and spoke tension. Check for any cracks or chips. The rim is tested for flatness <0.25mm and roundness <0.3mm. If you notice any issues, consult a professional. Avoid overheating the rim with excessive braking, though this is disc-specific so brake heat is less of a concern.
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