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Bola 700C 60mm U-Shape Carbon Rim | 28mm Wide

Bola 700C 60mm U-Shape Carbon Rim | 28mm Wide

Regular price $310.00 USD
Regular price $350.00 USD Sale price $310.00 USD
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The Bola 700C 60mm U-shape carbon rim - a 28mm-wide disc-brake tubeless aero rim with hooked or hookless bed for TT/triathlon and aero road builds.

Chasing every watt, the Bola 60mm U-shape rim rewards the committed rider - a deep-section disc-brake rim tuned for real-world yaw, not just lab wind tunnels. Sixty millimetres of carbon, 28mm wide, sold rim-only.

Buying Guide.

Weight tier - Extreme Light ~435g: the TT rider's pick - lightest end for a dedicated flat-course race wheel.

Weight tier - Ultralight ~455g: the balanced middle - shaves grams without the thinnest layup.

Weight tier - Superlight ~485g: the steady build - impact margin for gran fondo and fast weekend training.

Weight tier - Standard ~535g: the durability-first choice for heavier riders and regular road training.

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

Same-depth series: the 60mm road rim is the wide-outer version; the 60mm tubular is the glued race option.

Adjacent depth: the 55mm U-shape tubeless is calmer in the gusts.

Target Audience & Usage Notes.

Target audience.: TT/triathlon and aero road riders building disc wheelsets.

Rim-only.

Hookless requires ETRTO-certified tyres at 72-87 psi; hooked supports up to 125 psi.

Respect 120kg.

Not for climbing or crosswind novices.

The Ride That Awaits.

Build it around a disc road hub and bladed spokes, seat a 28mm tubeless, and the U-profile holds the flat like a held line: aero where it matters, calmer in the gusts than any sharp V, the wheel tracking true as you lean into the fastest stretch of your week. Free shipping, a 3-year rim warranty and crash-replacement discount.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 60mm
Bead Type: Hooked
Inner Width: 21mm hooked / 23mm hookless
Outer Width: 28mm
ERD (Effective Rim Diameter): 518mm
Weight Tier: Extreme Light 435g / Ultralight 455g / Superlight 485g / Standard 535g (+/-10-15g)
Trade-offs & Considerations
Aero vs Crosswind: The 60mm depth saves about 6.0W versus a 35mm rim at 40km/h on sheltered, straight courses; at 10° yaw the tall U-profile has a strong crosswind signature, so it suits flat, wind-exclusive race days rather than hilly, gusty terrain.
Weight vs Stiffness: The Extreme Light tier (435g) saves about 100g versus the Standard tier (535g) at the same 60mm depth (±5g); Standard/Superlight layups are recommended for riders over 100kg.
Tire-Type Trade-off: The hooked 21mm bed works with nearly all clincher/tubeless tyres at 100–125 psi; the hookless 23mm bed is slightly lighter and more voluminous but only with ETRTO hookless-certified tyres at 72–87 psi.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $310; 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); 60mm 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 road/TT frames with 100mm front / 130-142mm rear disc spacing
Tire Type: Clincher/tubeless (hooked or hookless)
Tire Width: 25-38mm
Valve: 6.5mm Presta
Brake: Disc only - 6-bolt or Center-Lock rotor hub
How It Compares
FAQ
What tyre widths fit this rim?
25–38mm; 28mm is the aero sweet spot on the 28mm outer width.
What is the ERD?
518mm. Use this Effective Rim Diameter for spoke-length calculation on 20/20 builds.
Hooked or hookless — which to choose?
Hooked 21mm works with nearly all clincher/tubeless tyres at 100–125 psi; hookless 23mm is slightly lighter and more voluminous but only with ETRTO hookless-certified tyres at 72–87 psi.
Which weight tier should I pick?
Standard 535g or Superlight 485g over 100kg; Ultralight 455g or Extreme Light 435g for lighter riders.
What is this rim best for?
Flat, wind-sheltered road races and time trials; the tall section is less friendly on gusty, hilly routes.
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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