• Close-up of Bola 45mm carbon rim surface texture showing unidirectional T700/T800 carbon weave
  • Tubeless-ready carbon road rim schematic, Bola 700c 45mm U-shape, bead profile highlighted
  • 29er Asymmetric Carbon MTB Rim | 30mm Height, 30mm Inner Width | Freeride & Enduro Bola
  • 29er Asymmetric Carbon MTB Rim | 30mm Height, 30mm Inner Width | Freeride & Enduro Bola
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Bola 700C 30mm Asymmetric Carbon Tubeless Rim | 28mm Wide

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

$310.00 USD
$350.00 USD $310.00 USD
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Free shipping  |  VAT included in EU & USA
Weave
Spoke QTY
Weight

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): 578
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: >60J (Higher than ISO 4210-7)
Flatness: <0.25mm (internal QC)
Roundness: <0.3mm (internal QC)
Max Spoke Tension: >350 kgf (internal QC, spoke breaking tension)
Ultimate Strength: >100 kgf (internal QC, static spoke-hole point load)
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
ModelWeightDepthWidthPrice
700C 30mm Rim 28mm Extreme Light 320g / Ultralight 340g / Superlight 360g / Standard 400g (+/-10-15g) 30mm 28mm See store
Model A ~430g 50mm 28mm $1,399
Model B ~430g 50mm 27mm $249
Model C ~420g 50mm 30mm $389
FAQ
Do I get a bare rim here, or is it built up with a hub and spokes?
It's a bare carbon rim — no hub, spokes or nipples. Take it to any wheel builder to lace it to your own hub; we can also supply a built wheel on request.
What spoke drillings are available, and which brake type is this rim rated for?
Spoke drillings and brake rating depend on the build option, selectable at checkout. If you plan to lace your own wheel, confirm the drilling and brake type with Bola before ordering so the rim matches your hub and frame.
What spoke tension can I safely build to — will the holes pull out of the carbon?
Drive-side / disc-side maximum tension is 130–140 kgf, with the non-drive side adapted to match; the spoke holes are locally reinforced inside the carbon layup to prevent pull-out cracking.
How does this rim handle crosswinds at speed, and is it stable on descents?
The shallower profile is inherently less crosswind-sensitive, keeping the front end predictable in gusty conditions — steering torque stays stable at 10°–15° yaw and descents remain composed.
Will I really pay no customs or VAT for delivery to the US and EU?
Yes. The Economy channel ships DDP — duties and VAT are fully prepaid by us, cleared in advance, and delivered to your door with no extra payment to customs or the courier.
Warranty & Shipping
Warranty Period: 3 years
Crash Replacement: 30% discount on replacement parts
Processing Time: In stock: 1–3 business days · Out of stock or custom order: 7–15 business days
Shipping method: FedEx/UPS/DPD/EMS Economy (free with duties & VAT included in USA & EU) · Expedited option available
Estimated Delivery: Economy 7–20 business days · Expedited 3–7 business days, customs clearance excluded
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