• Bola 700c 45mm Carbon Road Rim – 34mm Outer, 28mm Inner, Tubeless Ready
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700C 80mm Carbon Rim Aero TT Triathlon| Bola

700C 80mm Carbon Rim Aero TT Triathlon| Bola

$340.00 USD
$400.00 USD $340.00 USD
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Free shipping  |  VAT included in EU & USA
Weave
Spoke Hole
Weight

An 80mm UV (toroidal) carbon rim with 34/23mm widths, tubeless/clincher/tubular compatible, 580–610g, for triathlon and time trial.

Deep-Section Speed Weapon

The BOLA 80mm UV (toroidal) rim is engineered for flat triathlon and time trial courses where every watt and gust matters. Its 34mm outer width and 23mm inner width pair with 25–28mm tires to smooth airflow and improve crosswind behaviour.

Buying Guide.

Tire system - one rim, three setups: tubeless, clincher or tubular all work; pick tubular for lightest race day, tubeless for practicality.

Weight - heavy aero: this section carries rotating mass for flat tri; it is not a climbing rim.

Tire width - narrow bed: 25-28mm rubber is the aero choice; wider adds comfort and drag.

Adjacent depth - this is the deep end of the Bola aero range; step down to the shallower wave rims for anything but flat courses.

Target Audience & Usage Notes.

Triathletes, Ironman racers, and road time trialists on flat/rolling courses.

Not for climbing or gran fondo on rough terrain.

The Ride That Awaits.

Settle into your aero bars on a flat course and feel that towering toroidal section shoulder the wind aside - the road narrows to a single white line, the clock your only companion. It is pure, uncompromising speed for the rider who dares. A 2-year warranty and free shipping let you commit to the distance.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 80mm
Bead Type: Hooked
Inner Width: 23mm
Outer Width: 34mm
ERD (Effective Rim Diameter): 478
Weight Tier: 580-610g
Trade-offs & Considerations
Aero vs Crosswind: 80mm depth saves about 8.0W versus a 35mm rim at 40km/h for straight TT and triathlon; at 10° yaw the toroidal UV profile helps, but the deep section is the most crosswind-sensitive here and suits steady, sheltered courses.
Weight vs Stiffness: At about 580–610g per rim, the 80mm section is roughly 130g heavier than a 50mm rim (±5g); lateral stiffness is high for the depth, but the added rotating mass is the trade-off versus a shallower, climb-oriented rim.
Tire-Type Trade-off: The hooked bead pairs with 25–28mm tubeless tyres on the 23mm internal width; wider tyres increase drag and unsettle the deep section, so 25–28c is the practical limit for aero use.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $340; 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: N/A
Recommended Use Cases
Sprinting / Criterium: Good
Triathlon / TT: Excellent
Road Racing: Suitable
Gran Fondo / Endurance: Not recommended
Climbing / Hill Repeats: Not recommended
Not Recommended For: Not recommended
Compatibility
Frame Compatibility: 700c road and triathlon frames with 700c wheel fitment.
Tire Type: Tubeless, clincher, tubular
Tire Width Range: 25-28mm recommended
Brake Standard:
Drivetrain: N/A
Rotor Standard: N/A
How It Compares
ModelWeightDepthWidthPrice
700C 80mm Rim 34mm 580-610g 80mm 34mm 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 a deep-section rim handle crosswinds — will steering get pulled around?
An optimised profile keeps steering torque predictable at 10°–15° yaw, so high-speed descents stay planted even on deep-section builds.
What tyres can I mount on this rim, and what pressure should I run?
The 23mm inner width is optimised for 25–28mm tubeless tyres; anything wider than 28mm adds drag and can hurt crosswind behaviour.
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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