Bola 700C 120mm Deep Aero Carbon Tubeless Rim | 28mm Wide TT Triathlon
Bola 700C 120mm Deep Aero Carbon Tubeless Rim | 28mm Wide TT Triathlon
Couldn't load pickup availability
The Bola 120mm deep aero carbon rim - a 120mm UV-profile TT/triathlon rim, 28mm outer / 21.5mm internal, ~655g, hooked tubeless, for rear-wheel aero builds.
A 120mm blade of carbon poised between the reasonable and the extreme - deep enough to dominate a flat course, light enough to remain, by deep-section standards, almost nimble.
Buying Guide.
Use case: a deep rear rim for flat to rolling TT and triathlon, more manageable than the 180mm option.
Course judgement: choose it over shallower rims for sustained flat speed; it still favours wind-protected courses over climbs.
Tyre choice: run 25-28mm high-pressure race tyres on the narrow internal bed.
Same-depth series: the 180mm aero rim ($450) goes deeper for flat speed; the 90/95mm wave rim ($350) is wavier and calmer.
Adjacent depth: the 88mm hooked tubeless rim ($350) is a classic deep spoked choice below it.
Rear wheel only; respect the system weight limit.
Target Audience & Usage Notes.
TT/triathlon rear-wheel builds.
Rear wheel on flat to rolling courses; 25-28mm tubeless/clincher, up to 125 PSI.
Rider limit 125kg per product family.
Not for gravel, climbs, technical descents or very windy conditions.
The Ride That Awaits.
Built as a rear wheel, it holds a strong, steady aero line; the narrow bed lets a race tyre run thin and fast, the miles dropping away behind you.
You are the shape of speed.
Free shipping and a 3-year rim warranty round out the build.
Translation missing: en.product.metafields.specifications
- Material: carbon fiber
- Rim depth: 120mm
- External width: 28mm
- Internal width: 21.5mm
- Size: 700c
- Profile: UV-shaped
- Weight Tier: 655g
- Max Tire Pressure: 125
Translation missing: en.product.metafields.tradeoffs
- Aero vs Crosswind: The 120mm deep section provides excellent aerodynamic efficiency for straight-line speed, but the deep profile can be challenging in crosswinds. Riders may need to manage handling in gusty conditions, especially at speeds above 30 km/h.
- Aero vs Climbing: At 655g per rim, this carbon rim is lightweight for its depth, but when built into a wheelset it still adds significant inertia compared to shallower rims. On steep climbs, the aero benefit is minimal and the weight penalty becomes noticeable versus a sub-40mm rim.
- Stiffness vs Compliance: The high-modulus carbon layup offers high lateral stiffness for power transfer, but this can translate to a harsh ride on rough roads. The 21.5mm internal width and tubeless setup allow for lower tire pressures to help compliance, but the rim itself is not designed for comfort.
- Versatility vs Specialization: This rim is specifically designed for time trial and triathlon use, prioritizing aerodynamics over all-round performance. Its depth and narrow tire width range (25-28mm) make it less suitable for general road riding, where a shallower rim would be more balanced.
Translation missing: en.product.metafields.performance
- 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: N/A
Translation missing: en.product.metafields.usecases
- Sprinting / Criterium: Good for sprinting on flat circuits, but less agile in corners.
- Triathlon / TT: Excellent for time trials and triathlons on flat courses.
- Road Racing: Good for flat and rolling race stages.
- Gran Fondo / Endurance: Not recommended due to weight and wind sensitivity.
- Climbing / Hill Repeats: Not recommended.
- Not Recommended For: Gravel, steep climbs, technical descents, and extremely windy conditions.
Translation missing: en.product.metafields.compatibility
- Frame Compatibility: 700c road bikes with disc brake mounts
- Tire Type: Tubeless-ready clincher (also compatible with standard clincher tires)
- Tire Width Range: 25mm - 28mm
- Brake Standard: Disc brake only
- Drivetrain: All standard drivetrains (Shimano, SRAM, Campagnolo) depending on hub
- Rotor Standard: 6-bolt or CenterLock (depends on hub)
Translation missing: en.product.metafields.compares
| 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 120mm | N/A | N/A | N/A | 655g | 120mm | 21.5mm | see store |
| ENVE SES 8.9 | N/A | N/A | N/A | 680g | 89mm | 28mm | ~$1800 |
| Zipp 808 Firecrest | N/A | N/A | N/A | 730g | 82mm | 28mm | ~$1100 |
| Roval CLX 80 | N/A | N/A | N/A | 720g | 80mm | 28mm | ~$1000 |
Translation missing: en.product.metafields.faq
What tubeless setup do I need for this rim?
This rim is tubeless-ready with a hooked bead, so you can run tubeless tires without a tube. Use tubeless-specific tires, sealant, and a valve. For best performance, use a 25-28mm tubeless tire. The rim supports up to 125 psi, but typical road tubeless setups use lower pressure, around 80-100 psi.
What tire sizes are compatible with this rim?
The rim is designed for 700x25c and 700x28c tires. With a 21.5mm internal width, these tire sizes provide an optimized profile for aerodynamics. Using 25mm or 28mm tires is recommended for best performance and comfort.
How much weight does this rim save compared to a standard alloy rim?
This carbon rim weighs approximately 655g, which is about 300-400g lighter than a typical alloy rim of similar depth. Lighter rims reduce rotational mass, improving acceleration and climbing efficiency.
Can I build this rim with custom spokes and hubs?
Yes, this rim can be laced to any compatible hub using standard spokes. The rim has a spoke hole count that can be ordered with various drillings (e.g., 20/24/28). You can choose hubs, spokes, and nipples to suit your weight and riding style. A professional wheel build is recommended.
How do I maintain and inspect the carbon rim?
Regularly inspect the rim for cracks, delamination, or impact damage. Check spoke tension and trueness. Clean with mild soap and water, avoid harsh chemicals. For brake tracks (if applicable), use specific carbon brake pads. If you notice any damage, replace the rim immediately.
Translation missing: en.product.metafields.warranty
- Translation missing: en.product.metafields.period_label: Translation missing: en.product.metafields.period_value
- Translation missing: en.product.metafields.coverage_label: Translation missing: en.product.metafields.coverage_value
- Translation missing: en.product.metafields.crash_label: Translation missing: en.product.metafields.crash_value
- Translation missing: en.product.metafields.processing_label: Translation missing: en.product.metafields.processing_value
- Translation missing: en.product.metafields.shipping_method_label: Translation missing: en.product.metafields.shipping_method_value
- Translation missing: en.product.metafields.eta_label: Translation missing: en.product.metafields.eta_value
- Translation missing: en.product.metafields.packaging_label: Translation missing: en.product.metafields.packaging_value
