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55mm Tubeless Carbon Road Rim 32mm outer 26mm Inner| Bola

55mm Tubeless Carbon Road Rim 32mm outer 26mm Inner| Bola

Regular price $340.00 USD
Regular price $400.00 USD Sale price $340.00 USD
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The Bola 700C 55mm tubeless carbon road rim - a mid-deep 32mm external / 26mm internal Toray carbon aero rim for road racing and fast all-round builds.

Between the all-rounder and the time-trial weapon sits the 55mm rim - deep enough to matter on the flat, sane enough to hold its line in the gusts. The Bola 55mm road rim pairs a 32mm outer width with a 26mm inner bed, sold rim-only for builders who want aero without full TT commitment.

Buying Guide.

Weight tier - Extreme Light ~445g: the racer's pick - lightest end for breakaways and rolling hills, for lighter riders.

Weight tier - Ultralight ~465g: the balanced middle - lively enough to sprint, stable enough at this depth.

Weight tier - Superlight ~485g: the all-rounder band - impact margin for a season of racing.

Weight tier - Standard ~535g: the durable choice for larger riders and rougher courses.

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

Same-depth series: the 55mm U-shape tubeless is the narrower disc-brake version; the 55mm asymmetric balances disc spoke tension; the 55mm tubular is the glued race option.

Adjacent depth: the 50mm road/gravel rim climbs better; the 60mm road rim goes deeper for pure flat speed.

Target Audience & Usage Notes.

Target audience.: Road racers, gran fondo riders and fast group-ride builders.

Rim-only.

Seat tubeless beads with a compressor; respect 90 psi and 120kg.

Not for steep climbing, aggressive gravel or crosswind novices.

The Ride That Awaits.

Lace it to a quality hub, seat a 28-32c tubeless, and roll out: planted in the gusts, eager on the rises, the 55mm section holding speed without the nervous chatter of a sharp V. One aero wheel for your whole season - that is the invitation. Free shipping, a 3-year rim warranty and crash-replacement discount make the leap effortless.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 55mm
Bead Type: Hooked
Inner Width: 26mm
Outer Width: 32mm
ERD (Effective Rim Diameter): 528mm
Weight Tier: Extreme Light 445g / Ultralight 465g / Superlight 485g / Standard 535g (+/-10-15g)
Trade-offs & Considerations
Aero vs Crosswind: 55mm depth saves about 5.5W versus a 35mm rim at 40km/h; at 10° yaw the 32mm outer width keeps steering predictable on flat and rolling courses, at the cost of a stronger crosswind signature than a 50mm rim.
Weight vs Stiffness: The Extreme Light tier (445g) saves about 90g versus the Standard tier (535g) at the same 55mm depth (±5g); lateral stiffness holds within 3% across tiers.
Tire-Type Trade-off: The hooked bead accepts clincher and tubeless tyres from about 31mm to 48mm on the 26mm internal width; tubeless lowers rolling resistance and pinch-flat risk but needs tape, a valve and sealant.
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
Road Racing Builds: 2026 peloton standard is 28-30mm tubeless on wide rims (TdF 2026 avg ≈30mm); 55mm section suits 40+ km/h racing.
Gran Fondo / Endurance: Modern 2026 frames (Propel, SuperSix, S5) design around 30-32mm clearance; 21mm inner bed pairs 25-32mm tubeless per ETRTO 2026 guidance.
Wheel Building: Custom road builds with disc or rim hubs; UD carbon layup options for weight-conscious or durable builds.
Weight Tier Selection: Offered in weight tiers (120kg); lighter for climbing, heavier for training and impact margin.
Compatibility
Frame: 700C (ISO 622) road frames; brake type hub-dependent
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 this 26mm internal rim?
Optimised for 31–48mm tubeless on 700C; the minimum is about 28mm. Around 28c is the aero sweet spot.
What is the ERD for spoke length?
528mm. Use this Effective Rim Diameter to calculate spoke lengths; 24/24 holes, 6.5mm valve.
How does it compare with the 50mm version?
The 55mm is more aerodynamic on flat and rolling terrain at a small weight penalty; choose 55mm for racing and 50mm for climbing balance.
Which weight tiers should I choose?
Extreme Light (445g), Ultralight (465g), Superlight (485g) and Standard (535g); Standard or Superlight for riders over 100kg.
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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