55mm Carbon Road Rim 700C 30mm Asymmetric | Bola
55mm Carbon Road Rim 700C 30mm Asymmetric | Bola
Couldn't load pickup availability
The Bola 55mm asymmetric carbon road rim - a 55mm deep, 30mm-wide tubeless-ready UD carbon rim for aero road racing, triathlon and fast endurance builds, with a 2.8mm offset for even spoke tension.
Where shallow wheels give way and crosswinds intrude, the Bola 55mm asymmetric rim stands firm - a wind-cheating hoop built for the racer who refuses to surrender a single watt.
Buying Guide.
Weight tier - Standard ~520g (Heavy/Durable): choose it for training miles, rough roads and larger riders who want impact margin over feather weight.
Weight tier - Superlight ~460g (Midweight): the all-round pick, lively for rolling hills and sprints without giving up durability.
Weight tier - Ultralight ~445g (Midweight): the climber's and racer's pick, shedding rotational mass for rolling and sprint days.
Same-depth series: the 55mm tubular ($310) is a glued-tyre race-day option, while the 55mm tubeless 28mm rim ($310) runs a narrower, faster tyre platform.
Adjacent depth: step down to the 50mm 30mm rim ($310) for kinder crosswinds, or up to the 60mm 23mm rim ($310) for flat-course aero.
Choose per rider mass; system weight limit applies.
Target Audience & Usage Notes.
racers, triathletes and wheel builders building a disc-brake aero road wheelset.
Build it with a modern disc hub, 24-28 spokes and 27-42mm tubeless tyres; rider weight rated to 125kg, max tyre pressure per the spec rating (tubeless run lower, ~70-90 PSI, per ETRTO 2026 wide-rim guidance).
Exact tier weight to confirm at order.
The Ride That Awaits.
Picture the first pedal stroke on a dawn coast road: wide 28-32c tyres thud home, and the offset build holds a true, stiff wheel as the deep aero section slices the wind off your bars.
Lean into a descent and the carbon hums, steady in the gusts, willing you on.
Free shipping and a 3-year rim warranty mean the only thing left between you and the start line is the build.
Specifications
- Material: carbon fibre
- Rim depth: 55mm
- External width: 30mm
- Internal width: 24mm
- Size: 700c
- Profile: V-shaped
- Weight Tier: 440-515g
- Max Tire Pressure: 125
Trade-offs & Considerations
- Aero vs Climbing: The 55mm V-shaped profile reduces drag for speed, but adds weight compared to shallower rims; at 440-515g per rim, it's heavier than many climbing rims but still manageable.
- Stiffness vs Compliance: The asymmetric 2.8mm offset improves lateral stiffness for power transfer, but the unidirectional carbon layup and 24mm inner width allow some compliance to absorb road vibrations.
- Tire Volume vs Speed: The 30mm external width supports 25-32mm tubeless tires, increasing comfort and grip but potentially adding a bit of rolling resistance compared to narrower rims.
- Weight vs Durability: Lighter tiers (around 440g) prioritize climbing efficiency, while heavier tiers (up to 515g) may offer added durability; all are UCI certified and tested to high standards.
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: 125kgsA
Recommended Use Cases
- Sprinting / Criterium: Good
- Triathlon / TT: Excellent
- Road Racing: Good
- Gran Fondo / Endurance: Suitable
- Climbing / Hill Repeats: Not recommended
- Not Recommended For: Not recommended
Compatibility
- Frame Compatibility: 700C
- Tire Type: Tubeless
- Tire Width Range: 27-42mm
- Brake Standard: Not specified
- Drivetrain: Not applicable
- Rotor Standard: Not applicable
How It Compares
| Model | Hub | Spoke | Bearing | Weight | Depth | Width | Price |
|---|---|---|---|---|---|---|---|
| BOLA 55mm | — | — | — | 440-515 | 55mm | 24mm | see store |
| SES 5.6 | — | — | — | 450g | 56mm | 30mm | ~$1050 |
| 535 | — | — | — | 480g | 55mm | 28mm | ~$900 |
| CLX 50 | — | — | — | 460g | 50mm | 30mm | ~$950 |
FAQ
What is the recommended tire pressure for this rim?
The recommended pressure range is 100-125 psi. For tubeless setups, you can run slightly lower pressures for comfort and grip. The 24mm internal width supports 25-32mm tires, so adjust pressure accordingly.
Can I use this rim with tubeless tires?
Yes, this rim is tubeless-ready. It is optimized for 25-32mm tubeless road tires, which improves puncture resistance and ride comfort. Make sure to use tubeless valves and sealant.
What is the weight of this rim and how does it affect performance?
The rim weighs approximately 440-515g per rim depending on the production tier, with a tolerance of ±15g. Lighter rims are better for climbing, while heavier rims may offer more durability. The 55mm depth provides an aerodynamic advantage without excessive weight.
Can I customize the rim for a specific build?
Yes, custom valve and spoke drilling options are available to match specific wheel builds and hub standards. This allows you to tailor the rim to your hub and spoke count.
How should I inspect and maintain this carbon rim?
Regularly check for any signs of delamination, cracks, or impact damage. Ensure spoke tension is within recommended limits. Use a torque wrench for any bolted parts. Clean with mild soap and water, avoiding harsh solvents.
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
