• Close-up of rim's tubeless valve hole, compatible with 6.5mm tubeless valves, carbon construction
  • Matte carbon rim surface finish, 700C, suitable for high-performance gravel or cyclocross wheel builds
  • 700C Carbon Gravel/Cyclocross Rim, 35mm Depth, 24/25mm Tubeless, 330–400g Bola
  • 700C Carbon Gravel/Cyclocross Rim, 35mm Depth, 24/25mm Tubeless, 330–400g Bola
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700C Carbon Gravel cyclocross Rim 30mm Tubeless | Bola

700C Carbon Gravel cyclocross Rim 30mm Tubeless | Bola

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

The Bola 700C 30mm carbon gravel/cyclocross rim - a 30mm V-section, 30mm-wide tubeless rim with 24-25mm internal width in four light weight options, for gravel and CX.

Where the dirt track tightens and the course turns unpredictable, this rim keeps the rider light on their feet and quick to react.

Buying Guide.

Weight tier - ~325g (Ultralight): the feather for tight CX and steep gravel climbs.

Weight tier - ~345-365g (Ultralight): the balanced race pick for most gravel and CX riders.

Weight tier - ~390g (Light): the tough end for rocky CX and heavier riders.

Internal width - 24mm: 33-42c at ~35-55 PSI for cyclocross.

Internal width - 25mm: 40-50c at ~25-45 PSI for high-volume gravel.

Same-depth series: the 30mm 36/30 gravel rim ($320) runs a wider bed; this rim stays narrow, light and nimble.

Adjacent depth: the 45mm gravel asym rim ($310) adds aero on fast gravel; this 30mm rim is the calmer, lighter choice.

Target Audience & Usage Notes.

gravel racers, CX riders, bikepackers and wheel builders.

Disc-brake gravel/CX frames; single rim.

Rated to 100kg system weight.

Not a deep aero or road-race rim.

The Ride That Awaits.

On a wet CX course, let the tyre press into mud and grass at low pressure; the rim follows where you point it, nimble as a fox through the tape.

Every snap of the pedals comes back alive, with no dead spot.

Free shipping and a 3-year rim warranty support your off-road campaign.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 30mm
Bead Type: Hooked
Inner Width: 24mm / 25mm
Outer Width: 30mm
ERD (Effective Rim Diameter): 578
Weight Tier: 325g / 345g / 365g / 390g
Trade-offs & Considerations
Aero vs Crosswind: The 30mm shallow section saves only about 1.5W versus a 25mm box rim at 40km/h; at 10° yaw it stays very calm — the most predictable crosswind handling in the gravel line — traded against a smaller aero gain than the 45mm rim.
Weight vs Stiffness: The lightest 325g build saves about 65g versus the 390g top of the tier at the same 30mm depth (±5g); lateral stiffness holds within 3% across the four weight options.
Tire-Type Trade-off: The hooked bead accepts clincher and tubeless tyres from about 33c to 50c (24mm internal for 33–42c, 25mm internal for 40–50c); tubeless cuts rolling resistance but needs tape, valve and sealant to seal the bed.
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: 90–110 N/mm (internal lab)
Lateral Stiffness: ≥8N/mm
Max System Weight: 100
Recommended Use Cases
Gravel Racing: Excellent
Bikepacking: Good
Gran Fondo / Endurance: Good
Road Racing: Not recommended
Training / Daily Riding: Good
Not Recommended For: Not recommended
Compatibility
Frame Compatibility: 700C disc brake frames (gravel/CX bikes)
Tire Type: Tubeless-ready clincher
Tire Width Range: 27-42c
Brake Standard: Disc
Drivetrain: N/A (rim only)
Rotor Standard: Center-lock and 6-bolt
How It Compares
ModelWeightDepthWidthPrice
700C 30mm Rim 30mm 325g / 345g / 365g / 390g 30mm 30mm See store
Model A ~430g 50mm 28mm $1,399
Model B ~430g 50mm 27mm $249
Model C ~420g 50mm 30mm $389
FAQ
Which tyres fit on the 24–25mm inner rim, and what pressure suits me?
The 24mm inner width suits 33c–42c cyclocross tyres and the 25mm width suits 40c–50c gravel tyres; seat them around 30–50 PSI, and the hooked bed takes clincher and tubeless directly.
How do I work out the right spoke length for this rim?
Contact Bola for the exact ERD before ordering spokes. Once we confirm the figure, plug it into a known calculator (Sapim / DT) and add the recommended correction.
What is the maximum spoke tension I can run on this rim?
Drive-side / disc-side max tension is 130–140 kgf, with the non-drive side adapted to match; spoke holes are locally reinforced inside the carbon layup to prevent pull-out cracking.
Will the rim crack on rock gardens or bottom-outs at low pressure?
The bead area uses a thickened impact-reinforced layer; impact testing passes >40J extreme impacts (above the ISO 30J standard). Inner widths of 24–25mm accept wider tyres, which deform to absorb shock at low pressure.
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, 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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