• Bola 700c 45mm Carbon Road Rim – 34mm Outer, 28mm Inner, Tubeless Ready
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700C 65mm Tubeless Carbon Triathlon Rim 32mm outer 26mm | Bola

700C 65mm Tubeless Carbon Triathlon Rim 32mm outer 26mm | Bola

$340.00 USD
$400.00 USD $340.00 USD
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Free shipping  |  VAT included in EU & USA
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The Bola 700C 65mm tubeless carbon triathlon rim - a 65mm deep, 32mm external / 26mm internal Toray carbon aero rim for time trial and triathlon wheel builds.

Against the clock there is nowhere to hide; the Bola 65mm triathlon rim cuts through the air like a blade through silk, a deep-section weapon built for riders who count every watt. It is the deepest rim in the Bola line - 65mm of Toray carbon, 32mm external and 26mm internal - sold rim-only for custom TT and triathlon builds.

Buying Guide.

Weight tier - Extreme Light ~465g: the watts-hungry racer's pick - lowest rotational mass for flat-course TT, best reserved for lighter riders on smooth TT roads.

Weight tier - Ultralight ~485g: the wise middle - saves meaningful grams without ordering the thinnest, most fragile layup.

Weight tier - Superlight ~510g: the sensible daily build - a few more grams buy impact margin for rough TT tarmac.

Weight tier - Standard ~555g: the durable hoop for larger riders and wind-blasted out-and-back courses; the extra grams buy peace of mind.

Max rider weight: rated to 120kg - check rider + gear before ordering.

Same-depth series: the 60mm road rim is 5mm shallower and calmer in gusts - choose it if the course is not pure flats.

Adjacent depth: the 88mm TT rim goes deeper still for maximum flat-course aero.

Target Audience & Usage Notes.

Target audience.: Wheelbuilders, triathlon shops and time-trial riders building flat-course wheelsets.

Rim-only: source your own hub, spokes and tape.

Use a compressor to seat the bead; respect the 90 psi max and 120kg system limit.

Not for climbing, light gravel or crosswind-prone courses.

The Ride That Awaits.

Lace this 65mm bed to a dedicated TT hub and bladed spokes, seat a fast 28c tubeless, and step into your first straight: the deep section hooks the wind like a sail, drag melting away above 40 km/h, the carbon humming with every stroke. The flat you once dreaded becomes the stretch you chase. Free shipping, a 3-year rim warranty and crash-replacement discount let you order with nothing left to fear.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 65mm
Bead Type: Hooked
Inner Width: 26mm
Outer Width: 32mm
ERD (Effective Rim Diameter): 508mm
Weight Tier: Extreme Light 465g / Ultralight 485g / Superlight 510g / Standard 555g (+/-10-15g)
Trade-offs & Considerations
Aero vs Crosswind: 65mm depth saves about 6.5W versus a 35mm rim at 40km/h, ideal for steady TT and triathlon lines; at 10° yaw the deep section needs a calm rider, with a noticeably stronger crosswind signature than a 50mm rim.
Weight vs Stiffness: The Extreme Light tier (465g) saves about 90g versus the Standard tier (555g) at the same 65mm depth (±5g); lateral stiffness holds within 3% across tiers.
Tire-Type Trade-off: The hooked bead accepts clincher and tubeless tyres on the 26mm internal width; tubeless suits TT with low sealant hassle, but the max pressure is 90 psi.
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: 80–92 N/mm (internal lab)
Lateral Stiffness: 16–23 N/mm
Max System Weight: 120kg
Recommended Use Cases
Triathlon / Time Trial: IM and club TT fields reward deep-section aero; 65mm profile minimises drag on flat-to-rolling courses where aero dominates climbing.
Aero Road Racing: Fast flat road races and crits on disc frames; 2026 WorldTour teams run 28-30mm tubeless — pair the inner bed accordingly for rolling speed.
Race-Pace Training: Open, fast courses where holding aero position pays off; stable crosswind handling builds confidence before race day.
Compatibility
Frame: 700C (ISO 622) road/TT frames; brake type depends on hub
Tire Type: Tubeless-ready clincher
Tire Width: 31-48mm (min 28mm)
Valve: 6.5mm Presta
Brake: Rim-only; disc or rim brake hub per build
How It Compares
ModelWeightDepthWidthPrice
700C 65mm Rim 32mm Extreme Light 465g / Ultralight 485g / Superlight 510g / Standard 555g (+/-10-15g) 65mm 32mm 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 26mm inner width is optimised for tubeless tyres from 31mm to 48mm, with a 28mm minimum; 25–28c is the classic TT aero range.
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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