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Bola 700C 30mm Carbon Tubeless Road Rim | 28mm Wide

Bola 700C 30mm Carbon Tubeless Road 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 30mm U-shape carbon tubeless rim - a shallow, light 28mm-wide disc-brake climbing rim with hooked or hookless bed.

Designed for the rider who demands a fast, stable wheel platform: the Bola 30mm U-shape rim blends modest aero with tubeless practicality and a featherweight build. Thirty millimetres of carbon, 28mm wide, sold rim-only.

Buying Guide.

Weight tier - Extreme Light ~315g: the shallow climber's pick - lightest and calmest in the family for riders who climb more than they time-trial.

Weight tier - Ultralight ~335g: the balanced middle - lively on climbs, tough enough to train.

Weight tier - Superlight ~360g: the steady build - impact margin for windy training days.

Weight tier - Standard ~400g: the durable daily choice for heavier riders and rough roads.

Max rider weight: rated to 100kg - check rider + gear before ordering.

Same-depth series: the 30mm asymmetric balances disc spoke tension with an offset bed.

Adjacent depth: the 35mm U-shape adds aero; the 40mm U-shape goes deeper.

Target Audience & Usage Notes.

Target audience.: Climbers and riders in windy terrain.

Rim-only.

Hookless requires ETRTO-certified tyres; respect 90 psi and 100kg.

Not for flat TT maximum speed.

The Ride That Awaits.

Build it around a climbing hub, seat a 28-32c tubeless, and the 30mm U-profile accelerates like a held breath: utterly calm in the wind, eager on every rise, the shallow light wheel for the rider who lives to climb - your kind of ride. Order today, climb tomorrow. Free shipping, a 3-year rim warranty and crash-replacement discount.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 30mm
Bead Type: Hooked
Inner Width: 21mm / 23mm
Outer Width: 28mm
ERD (Effective Rim Diameter): TBD
Weight Tier: Standard (400±15g), Super Light (360±10g), Ultra Light (335±10g), Extreme Light (315±10g)
Trade-offs & Considerations
Aero vs Crosswind: At 30mm depth this is the light, calm option: it costs about 2.5W versus a 40mm rim at 40km/h, but at 10° yaw the shallow 30mm section gives the lightest, most predictable steering on crosswind descents.
Weight vs Stiffness: The Extreme Light tier (315g) saves 85g versus the Standard tier (400g) (±5g); lateral stiffness holds within 3% across tiers on the same 30mm lay-up.
Tire-Type Trade-off: The hooked 21mm version suits 25–32c tyres and the 23mm hookless version suits 28–35c ETRTO tyres; tubeless cuts rolling resistance and pinch flats, and the bed arrives factory-sealed.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $310; custom nipple angles, valve hole 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: 90–110 N/mm (internal lab)
Lateral Stiffness: ≥8N/mm
Max System Weight: N/A
Recommended Use Cases
Climbing / Hill Repeats: Excellent. Lightweight options (315-360g) make it ideal for climbing.
Gran Fondo / Endurance: Good. Tubeless-ready and comfortable geometry suit long rides.
Road Racing: Good. Balances aero and weight for all-round racing.
Sprinting / Criterium: Suitable. 30mm depth is okay but not as aero as deeper rims for sprinting.
Training / Daily Riding: Good. Durable standard weight option available.
Not Recommended For: Not recommended for heavy downhills or extreme aero demands where deeper rims (50mm+) excel.
Compatibility
Frame Compatibility: Standard road frames with disc brake mounts (flat mount or post mount depending on build).
Tire Type: Clincher, tubeless, and hookless compatible (ETRTO-approved for hookless).
Tire Width Range: 25c-38c for hooked, 27c-38c for hookless.
Brake Standard: Disc only (center-lock or 6-bolt rotor configuration specified at build).
Drivetrain: Compatible with standard road drivetrains (Shimano, SRAM, Campagnolo) via hub choice.
Rotor Standard: Center-lock or 6-bolt (specified at build).
How It Compares
FAQ
How do I set it up tubeless?
The bed is factory-sealed, so no rim tape is needed: fit a tubeless valve, mount a tubeless tyre and add sealant, then inflate to seat the bead.
Which tyre sizes fit this rim?
The hooked 21mm inner width suits 25c–32c tyres; the 23mm hookless version is best for 28c–35c ETRTO-compliant tyres.
How much weight do I save versus alloy?
At 315–400g it saves about 150–250g per rim versus a typical alloy rim; the lightest tiers trade a little impact durability.
Can I match it to my hub?
Yes: choose spoke hole, valve hole and nipple angles (front 7°, rear 5–7°) to fit 100mm front / 130–142mm rear hubs with 6-bolt or centerlock rotors.
What are the pressure and rider-weight limits?
Do not exceed 125 psi or a 120kg rider weight.
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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