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

Bola 700C 30mm Asymmetric Carbon Tubeless 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 asymmetric carbon rim - a shallow, light offset-bed Toray climbing rim for all-round road and climbing builds.

The shallow climber: the Bola 30mm asymmetric is the lightest, calmest aero rim in the asymmetric family - built for riders who want a lively, wind-steady wheel. Thirty millimetres of Toray carbon, 28mm wide, sold rim-only.

Buying Guide.

Weight tier - Extreme Light ~320g: the shallow climber's pick - lightest end, utterly calm in the wind.

Weight tier - Ultralight ~340g: 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 choice for heavier riders and rough roads.

Max rider weight: rated to 105kg - check rider + gear before ordering.

Same-depth series: the 30mm U-shape tubeless is the symmetric disc-brake version.

Adjacent depth: the 35mm asymmetric adds aero; the 40mm asymmetric tubeless goes deeper.

Target Audience & Usage Notes.

Target audience.: Climbers, riders in windy terrain and all-round road riders.

Rim-only.

Seat tubeless beads with a compressor; respect 110 psi and 105kg.

Not for flat TT maximum speed.

The Ride That Awaits.

Lace it to a climbing hub, seat a 28-32c tubeless, and the shallow, light wheel accelerates like a whispered secret: 320g of rim, 30mm of modest aero, as calm in the gale as on the calmest road. For the rider who climbs more than they time-trial - that is you. 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 hooked / 23mm hookless
Outer Width: 28mm
ERD (Effective Rim Diameter): TBD
Weight Tier: Extreme Light 320g / Ultralight 340g / Superlight 360g / Standard 400g (+/-10-15g)
Trade-offs & Considerations
Aero vs Crosswind: The shallow 30mm depth is the climbing and all-round choice; it saves only about 1.5W versus a 25mm box rim at 40km/h, but at 10° yaw it is the calmest-handling depth in the range with almost no crosswind steer.
Weight vs Stiffness: The Extreme Light tier (320g) saves about 80g versus the Standard tier (400g) (±5g); lateral stiffness holds within 3% because the asymmetric spoke bed and 28mm outer width are shared across all tiers.
Tire-Type Trade-off: The hooked bed (21mm internal) allows higher pressure, while the hookless option (23mm internal) runs wider, lower-volume ETRTO-certified tyres around 72–87 psi; both accept 25c–40c tubeless.
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: 62–74 N/mm (internal lab)
Lateral Stiffness: 8–13 N/mm
Max System Weight: 105kg
Recommended Use Cases
Road Racing Builds: 2026 peloton standard is 28-30mm tubeless on wide rims (TdF 2026 avg ≈30mm); 30mm 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 (105kg (page)); lighter for climbing, heavier for training and impact margin.
Compatibility
Frame: 700C (ISO 622) road frames; disc or rim brake per hub
Tire Type: Tubeless-ready clincher
Tire Width: 25-40mm
Valve: 6.5mm Presta
Brake: Disc or rim brake (hub-dependent)
How It Compares
FAQ
What tyre sizes fit this rim?
25c–40c tubeless; 28c–32c is the aero sweet spot for road.
Hooked or hookless, and what is the difference?
Choose hooked (21mm internal, higher pressure) or hookless (23mm internal, more volume, ETRTO-certified tyres at 72–87 psi).
What is the ERD for spoke length calculation?
The ERD is not stated on the page — confirm with Bola before ordering spokes; the family runs around 578mm.
Which weight tiers are available?
Extreme Light (320g), Ultralight (340g), Superlight (360g) and Standard (400g), ±10–15g.
Is this sold as a complete wheel?
No. This is a bare rim only — no hub, spokes, nipples or tape; build it to your chosen components.
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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