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

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

Regular price $340.00 USD
Regular price $400.00 USD Sale price $340.00 USD
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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: >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: 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
FAQ
What tyre widths fit the 26mm internal rim?
Optimised for 31–48mm tubeless on 700C (ISO 622); the minimum is about 28mm. 25–28c is the classic TT aero sweet spot.
What is the ERD and spoke count?
ERD 508mm; 24/24 spoke holes (4.5mm spoke, 7.5mm assembly). Calculate spoke length from 508mm.
How do I set it up tubeless?
Apply tubeless tape and a 6.5mm valve, mount a tubeless tyre, inflate rapidly to seat the bead (a compressor helps), then add sealant. Max 90 psi.
Which weight tier should I choose?
Standard (555g) or Superlight (510g) for riders over 100kg or rough courses; Ultralight (485g) and Extreme Light (465g) for lighter riders chasing watts.
Which brake type is compatible?
Disc brake builds only — no rim-brake braking surface.
Warranty & Shipping
Warranty Period: 3 years
Crash Replacement: 30% discount on replacement parts
Processing Time: 1–3 business days (standard stock); 7–15 business days (custom)
Estimated Delivery: 7–15 business days (standard); 3–5 business days (expedited)
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