• 700C Carbon Gravel and Road Rim, 45mm Depth, 30mm Width, Tubeless-Ready, Disc Brake Compatible Bola
  • 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 and Road Rim 45mm Depth 30mm width | Bola

700C Carbon Gravel and Road Rim 45mm Depth 30mm width | Bola

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

The Bola 700C 45mm carbon gravel/road rim - a 45mm mid-depth, 30mm-wide tubeless rim with 24-25mm internal width in the 330-400g class, for fast gravel and all-road builds.

A mid-depth hoop that asks little and gives much: quick to spin, comfortable over rough chipseal, and wide enough to tame modern gravel rubber.

Buying Guide.

Weight tier - light ~330g (Ultralight): for climbing and fast gravel acceleration.

Weight tier - upper ~400g (Light): for rougher gravel and riders wanting more impact margin.

Internal width - 24-25mm: 30-45c at ~40-70 PSI, the lower end for rough gravel, the upper for fast tarmac.

Same-depth series: the 45mm asymmetric gravel rim ($310) adds a disc-side offset for even spoke tension.

Adjacent depth: the 30mm gravel/CX rim ($310) is calmer in wind; the 50mm 30mm rim ($310) pushes aero further.

Single-rim item; confirm tier weight and pressure before lacing.

Target Audience & Usage Notes.

gravel racers, all-road riders and wheel builders wanting a light 45mm platform.

Disc-brake gravel/all-road frames; single rim only.

Exact weight tier, ERD and max PSI per ETRTO 2026 wide-rim guidance before lacing.

The Ride That Awaits.

Spin it up and the wheel accelerates like a friend urging you on, light and quick over rollers.

Run it tubeless and the wide bed soaks the rough stuff, letting you look further up the road.

Free shipping and a 3-year rim warranty let you build with confidence.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 45mm
Bead Type: Hooked
Inner Width: 24-25mm
Outer Width: 30mm
ERD (Effective Rim Diameter): TBD
Weight Tier: 360-435g
Trade-offs & Considerations
Aero vs Crosswind: 45mm depth saves about 3.5W versus a 35mm rim at 40km/h; at 10° yaw the 30mm outer width keeps steering calm on exposed gravel, at the cost of a higher crosswind signature than a 30mm shallow rim.
Weight vs Stiffness: The lightest 360g build saves about 75g versus the 435g top of the tier at the same 45mm depth (±5g); lateral stiffness holds within 3% across the range, so the lightest rim keeps the same structure.
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: 120
Recommended Use Cases
Climbing / Hill Repeats: Good - 45mm depth is moderate and weight around 360g is acceptable for climbing.
Gran Fondo / Endurance: Excellent - wide internal width supports comfort and stability for long rides.
Road Racing: Excellent - aero profile and tubeless compatibility for speed.
Sprinting / Criterium: Good - 45mm depth provides aero benefit without excessive crosswind sensitivity.
Training / Daily Riding: Good - durable carbon construction and tubeless setup for daily use.
Not Recommended For: Not recommended for aggressive downhill or extreme off-road use due to rim depth.
Compatibility
Frame Compatibility: Compatible with 700c road and gravel frames designed for disc brakes.
Tire Type: Tubeless-ready clincher (also compatible with tubes)
Tire Width Range: 33c to 50c (recommended based on internal width)
Brake Standard: Disc brake (requires disc brake hubs)
Drivetrain: All standard drivetrains (dependent on hub/freehub)
Rotor Standard: Center-lock or 6-bolt (hub dependent)
How It Compares
ModelWeightDepthWidthPrice
700C 45mm Rim 30mm 360-435g 45mm 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 24–25mm inner width covers 33c–50c tyres — a 40c gravel tyre runs around 30–45 PSI; it is a hooked bed, so clincher and tubeless both mount 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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