• 700C Carbon Tubeless Ready Rim, 88mm Deep, 25mm Wide, U-Shape for TT and Triathlon, Bola Bola
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Bola 700C 88mm Deep Aero Carbon Tubeless Rim | 26mm Wide TT Triathlon

Bola 700C 88mm Deep Aero Carbon Tubeless Rim | 26mm Wide TT Triathlon

$390.00 USD
$450.00 USD $390.00 USD
Sale Sold out
Free shipping  |  VAT included in EU & USA
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Spoke QTY
Weight

The Bola 700C 88mm U-shape carbon tubeless-ready rim - the deepest rim in the Bola line, 26mm wide, for pure time-trial and triathlon flat-course builds.

When every second and every watt counts, the Bola 88mm TT rim delivers - a full-deep U-shaped weapon engineered for the sustained high-speed efforts of time trial and triathlon. Eighty-eight millimetres of Toray carbon, 26mm wide, sold rim-only.

Buying Guide.

Weight tier - Superlight ~650g: the flat-course racer's pick - lightest end, for a dedicated TT build on smoother courses.

Weight tier - Standard ~690g: the durable choice - more layup margin for heavier TT riders and rough out-and-back tarmac.

Max rider weight: rated to 125kg - check rider + gear before ordering.

Same-depth series: the 65mm tri rim is shallower and calmer; the 60mm U-shape tubeless is the disc-brake road version.

Adjacent depth: no Bola rim goes deeper than 88mm - this is the maximum-depth option.

Target Audience & Usage Notes.

Target audience.: Time-trial and triathlon riders building dedicated flat-course wheelsets.

Rim-only.

Use a compressor to seat tubeless beads; use carbon-specific rim-brake pads and watch heat on descents; respect 120 psi and 125kg.

Not for climbing, road racing or crosswinds.

The Ride That Awaits.

Lace it to a dedicated TT hub and bladed spokes, seat a 28mm tubeless, and the flat becomes your theatre: 88mm of U-profile slicing air, the wheel tracking like a rail as the kilometres fall away. Pure aero, pure out-and-back, pure speed. Free shipping, a 3-year rim warranty and crash-replacement discount.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 88mm
Bead Type: Hooked
Inner Width: 20mm
Outer Width: 26mm
ERD (Effective Rim Diameter): 462
Weight Tier: Standard 690g / Superlight 650g
Trade-offs & Considerations
Aero vs Crosswind: 88mm depth saves about 9.0W versus a 35mm rim at 40km/h for straight TT and triathlon; at 10° yaw the very deep section is the most crosswind-sensitive here and really suits windless, sheltered time trials.
Weight vs Stiffness: The Superlight layup (650g) saves about 40g per rim versus the Standard layup (690g) (±5g), 80g for a pair; lateral stiffness is high, but the deep section adds rotating mass versus a shallower rim.
Tire-Type Trade-off: The hooked bead pairs with 25–32mm tubeless tyres on the 20mm internal width; 28mm is the best all-round, while up to 32mm adds comfort but slightly more drag.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $390; custom spoke-hole count or decals add 7–15 business days and roughly a $40–80 premium.
Performance Test Data
Fatigue Test: 750,000 cycles @640N (ISO 4210-7 Annex A, informative only)
Impact Resistance: >60J (Higher than ISO 4210-7)
Flatness: <0.25mm (internal QC)
Roundness: <0.3mm (internal QC)
Max Spoke Tension: >350 kgf (internal QC, spoke breaking tension)
Ultimate Strength: >300 kgf (internal QC, static spoke-hole point load)
Dynamic Equilibrium: <3g (internal QC)
Radial Stiffness: 90–110 N/mm (internal lab)
Lateral Stiffness: ≥8N/mm
Max System Weight: 125kgs
Recommended Use Cases
Sprinting / Criterium: Suitable
Triathlon / TT: Excellent
Road Racing: Good
Gran Fondo / Endurance: Suitable
Climbing / Hill Repeats: Not recommended
Not Recommended For: Climbing / steep terrain
Compatibility
Frame Compatibility: 700C road, TT, or triathlon frames with rim brakes
Tire Type: Clincher (tubeless-ready)
Tire Width Range: 25-36mm
Brake Standard: Rim brake (carbon-specific brake pads)
Drivetrain: N/A (rim only)
Rotor Standard: N/A (rim only)
How It Compares
ModelWeightDepthWidthPrice
700C 88mm Rim 26mm Standard 690g / Superlight 650g 88mm 26mm See store
Model A ~430g 50mm 28mm $1,399
Model B ~430g 50mm 27mm $249
Model C ~420g 50mm 30mm $389
FAQ
What spoke drillings are available, and which brake type is this rim rated for?
Spoke drillings and brake rating depend on the build option, selectable at checkout. If you plan to lace your own wheel, confirm the drilling and brake type with Bola before ordering so the rim matches your hub and frame.
What is the maximum spoke tension for this rim?
Drive-side / disc-side max tension is 130–140 kgf, with the non-drive side adapted to match; spoke holes are locally reinforced inside the carbon layup to prevent pull-out cracking.
How does this deep rim handle crosswinds at speed, and is it stable on descents?
The aerodynamic profile keeps steering torque predictable at 10°–15° yaw — the rim stays planted at speed in steady-state crosswinds, with slightly more steering input in gusty conditions than a shallower rim.
What tyres can I mount on this rim, and what pressure should I run?
The narrow inner width suits tyres from 25mm to 32mm, with 28mm the best all-around aero and rolling balance.
Will I really pay no customs or VAT for delivery to the US and EU?
Yes. The Economy channel ships DDP — duties and VAT are fully prepaid by us, cleared in advance, delivered to your door with no extra payment to customs or the courier.
Warranty & Shipping
Warranty Period: 3 years
Crash Replacement: 30% discount on replacement parts
Processing Time: In stock: 1–3 business days · Out of stock or custom order: 7–15 business days
Shipping method: FedEx/UPS/DPD/EMS Economy (free with duties & VAT included in USA & EU) · Expedited option available
Estimated Delivery: Economy 7–20 business days · Expedited 3–7 business days, customs clearance excluded
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