Bola 700C 88mm Hooked Tubeless Aero Carbon Rim | 27mm Wide TT Triathlon
Bola 700C 88mm Hooked Tubeless Aero Carbon Rim | 27mm Wide TT Triathlon
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A deep 88mm U-shaped hooked tubeless carbon rim engineered for time trial and triathlon racers who want proven aero speed at a factory-direct price.
Built for the Clock
When every second counts, the BOLA 88mm hooked tubeless rim delivers measurable drag reduction. Its full 88mm U-shaped profile, 27mm outer width and 20mm inner width are tuned for 25–36C tires, with a hooked ETRTO bead that seats reliably up to 125 psi.
Buying Guide.
Weight tier - Standard ~690g: the safe race-weekend choice, robust and happy to be bashed around the pits.
Weight tier - Superlight ~650g: take it for flat time trials where every gram of rotating mass counts; a small saving for a small margin.
Tire width - narrow bed: favor 25-28mm rubber for pure aero; step up to 32-36mm only when course comfort outweighs drag.
Brake - rim brake only: build it for a TT bike; it has no place on a disc frame.
Adjacent depth - for anything but a flat course, step to a shallower Bola aero rim; this is a straight-line weapon, not a climber.
Target Audience & Usage Notes.
Time trialists, Ironman and ITU triathletes, and wheel builders supplying flat-course racing customers.
Not recommended for steep climbing, technical descents, or heavy crosswind days.
Rider weight rating up to 125kg per manufacturer test data.
The Ride That Awaits.
Point it at the start ramp, drop your head, and watch the world flatten - that tall hooked section cheats the wind with a composer's discipline while you hold a tuck and the clock melts away. It wants the flat, the straight, the lone rider against the elements. A 3-year warranty with crash replacement means you can attack without looking over your shoulder.
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- Material: high-modulus carbon fiber composite
- Rim depth: 88mm
- External width: 27mm
- Internal width: 20mm
- Size: 700c
- Profile: U-shaped
- Weight Tier: standard ~690g, superlight ~650g
- Max Tire Pressure: 100-125 psi
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- Aero vs Climbing: 88mm depth enhances aero efficiency at high speed, but adds weight (~690g) making climbs less responsive; ideal for flat TTs, not mountain stages.
- Tire Volume vs Speed: 20mm inner width allows 25-32mm tires; wider tires offer comfort and grip but may increase drag compared to 25mm; choose 25mm for max aero.
- Weight vs Durability: Superlight build saves 40g (650g vs 690g) but may have lower impact resistance; standard build offers more robust handling for everyday use.
- Crosswind vs Aero: Deep 88mm rim provides significant aero benefit but is more susceptible to crosswinds; U-shape mitigates some instability, but handling requires attention in gusty 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: <0.25mm (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
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- Sprinting / Criterium: Good for flat or rolling crits, but heavy for sharp accelerations.
- Triathlon / TT: Excellent; designed for this, deep rim and aero profile.
- Road Racing: Good for flat and rolling courses; not for mountain stages.
- Gran Fondo / Endurance: Suitable for flat long rides, but not ideal for climbing.
- Climbing / Hill Repeats: Not recommended due to weight and deep rim.
- Not Recommended For: Technical descents and crosswind conditions.
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- Frame Compatibility: 700C road, TT, triathlon frames
- Tire Type: Tubeless and clincher
- Tire Width Range: 25–36C
- Brake Standard: Rim brake
- Drivetrain: N/A (rim only)
- Rotor Standard: N/A (rim brake)
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|---|---|---|---|---|---|---|---|
| Bola 88mm | _ | _ | _ | 690g / 650g | 88mm | 20mm | see store |
| Hyper 88 | _ | _ | _ | 700g | 88mm | 27mm | ~$250 |
| Aero 88 | _ | _ | _ | 680g | 88mm | 26mm | ~$280 |
| Drive 88 | _ | _ | _ | 720g | 88mm | 28mm | ~$230 |
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Can I run tubeless tires on this rim?
Yes, the rim is hooked tubeless ready. It has a hooked bead and meets ETRTO standards. Use tubeless valves and sealant. Recommended pressure is 100-125 psi. Ensure tire is rated for tubeless and the rim tape is installed correctly.
What tire sizes are compatible?
The rim has an internal width of 20mm and external width of 27mm, so it supports tires from 25mm to 32mm. For optimal aero, 25mm tires are recommended. Wider tires up to 32mm are fine for comfort.
How much weight can I save vs. my current rim?
The rim weighs approximately 690g (standard) or 650g (superlight). Compare to typical aluminum rims of similar depth that weigh over 500g? Actually 88mm aluminum rims are heavy, so you'll save significant weight and gain aero. Save up to 200-300g per wheel.
Can I build custom wheels with this rim?
Absolutely. The rim is designed for wheel building. Use 28mm wide aero spokes? Actually we recommend 18-24 spokes with brass nipples. Ensure proper spoke tension and stress relief. Consult your wheel builder.
How do I maintain and inspect this rim?
Check for cracks around spoke holes and brake track. Inspect for delamination or impact damage. Clean with mild soap. Avoid harsh chemicals. Check spoke tension regularly. If you notice any issues, stop using and consult a professional.
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