• BOLA 180mm Deep Aero Carbon Rim 700C – Hooked Tubeless, 28mm/21.5mm, TT & Triathlon Bola
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Bola 700C 180mm Deep Aero Carbon Tubeless Rim | 28mm Wide TT Triathlon

Bola 700C 180mm Deep Aero Carbon Tubeless Rim | 28mm Wide TT Triathlon

$450.00 USD
$450.00 USD
Sale Sold out
Free shipping  |  VAT included in EU & USA
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The Bola 180mm deep aero carbon rim - an extreme 180mm UV-profile TT/triathlon rim, 28mm outer / 21.5mm internal, ~815g, hooked tubeless, for rear-wheel aero builds.

The deepest whisper of speed Bola makes - 180mm of carbon resolve, built for courses where the horizon runs flat and the clock is the only judge.

Buying Guide.

Use case: the maximum-aero rear rim for wind-protected, flat TT and triathlon courses only.

Course judgement: choose it for flat, neutral-wind events; it is the most crosswind-sensitive option and penalises climbs.

Tyre choice: run 25-28mm high-pressure race tyres on the narrow internal bed.

Same-depth series: the 120mm aero rim ($420) is lighter and more manageable; the 90/95mm wave rim ($350) is calmer in gusts.

Adjacent depth: nothing in the Bola range goes deeper - step down to the 120mm rim for any wind or rolling terrain.

Rear wheel only; pair with a calmer front and respect the system weight limit.

Target Audience & Usage Notes.

TT/triathlon rear-wheel builds on flat, wind-neutral courses.

Rear wheel only; 25-32mm tubeless/clincher, 100-125 PSI. 125kg rider limit.

Pair with a calmer front.

Not for general road riding, climbing or windy races.

The Ride That Awaits.

Built as a rear wheel it cuts a startling, solid silhouette - on a flat, windless course it seems to pull you forward by will alone.

Everything but the straight ahead falls away.

Free shipping and a 3-year rim warranty see you to the start line.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 180mm
Bead Type: Hooked
Inner Width: 21.5mm
Outer Width: 28mm
ERD (Effective Rim Diameter): 278mm
Weight Tier: 815g
Trade-offs & Considerations
Aero vs Crosswind: An 180mm section is the aero extreme, saving about 16.0W over a 50mm rim at 40km/h in steady conditions, but it is highly sensitive to crosswind at 10° yaw and suits a stable rider in sheltered TT/triathlon events.
Weight vs Stiffness: At 815g the tall section adds roughly 360g over a 50mm rim (±5g); lateral rigidity is high for tracking at speed, but the added rotational mass penalizes any climbing.
Tire-Type Trade-off: The hooked bead mounts 25–28c tubeless tires on the narrow 21.5mm internal bed; the narrow width favors 25c for aero over wide comfort tires.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $450; a custom spoke 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: Not recommended
Triathlon / TT: Excellent
Road Racing: Suitable
Gran Fondo / Endurance: Not recommended
Climbing / Hill Repeats: Not recommended
Not Recommended For: Technical circuits, windy conditions, and hilly courses
Compatibility
Frame Compatibility: Fits standard 700C road frames; ensure clearance for 28mm external width.
Tire Type: Tubeless or clincher with hooked bead
Tire Width Range: 25-32mm
Brake Standard: Not specified; compatible with rim or disc brake depending on build
Drivetrain: Compatible with any drivetrain depending on hub
Rotor Standard: Not applicable; rim only
How It Compares
ModelWeightDepthWidthPrice
700C 180mm Rim 28mm 815g 180mm 28mm See store
Model A ~430g 50mm 28mm $1,399
Model B ~430g 50mm 27mm $249
Model C ~420g 50mm 30mm $389
FAQ
Do I get a bare rim here, or is it built up with a hub and spokes?
It's a bare carbon rim — no hub, spokes or nipples. Take it to any wheel builder to lace it to your own hub; we can also supply a built wheel on request.
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 spoke tension can I safely build to — will the holes pull out of the carbon?
Drive-side / disc-side maximum tension is 130–140 kgf, with the non-drive side adapted to match; the spoke holes are locally reinforced inside the carbon layup to prevent pull-out cracking.
How does a deep aero rim handle crosswinds — will it tug the steering on fast descents?
An optimised aero profile keeps steering torque predictable at 10°–15° yaw, so high-speed descents stay planted and controlled.
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, and 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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