• Bola 700c 45mm Carbon Road Rim – 34mm Outer, 28mm Inner, Tubeless Ready
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700C 45mm Tubeless Carbon Rim 36/30mm Wide | Bola

700C 45mm Tubeless Carbon Rim 36/30mm Wide | Bola

$320.00 USD
$360.00 USD $320.00 USD
Sale Sold out
Free shipping  |  VAT included in EU & USA
Weave
Spoke QTY
Weight

A 45mm aero-profile carbon rim with 36/30mm widths, tubeless-ready, and four weight tiers 375–450g for road and gravel mixed-surface riding.

All-Round Aero and Comfort

The BOLA 45mm tubeless rim balances aero gains with wide-tire support. Its 36mm outer and 30mm inner width creates a stable platform for 35c–48c tubeless road and gravel tires, with four factory weight tiers to tune rotational mass.

Buying Guide.

Weight tier - Extreme Light ~375g: max rotational savings for climbers.

Weight tier - Ultra Light ~395g: climbing and crits.

Weight tier - Super Light ~425g: the all-round middle.

Weight tier - Normal ~450g: durability for rough roads and larger riders.

Internal width - 30mm: a stable platform for 35-48c road/gravel tires; choose it for mixed surfaces, pick a narrower Bola bed for pure tarmac.

Build - rim or disc depending on frame: confirm your brake standard before ordering.

Target Audience & Usage Notes.

Road racers, gran fondo riders, mixed-surface all-road cyclists.

Not for heavy off-road or loaded touring.

The Ride That Awaits.

Build it, bed the tires, roll out, and you will feel the wheel strike a balance few manage - fast over tarmac, forgiving over gravel, stiff enough to sprint yet compliant enough for the long day. It asks little and gives back miles. Free shipping and a 3-year warranty make it the easy choice for you.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 45mm
Bead Type: Hooked
Inner Width: 30mm
Outer Width: 36mm
ERD (Effective Rim Diameter): TBD
Weight Tier: Normal 450g, Super Light 425g, Ultra Light 395g, Extreme Light 375g
Trade-offs & Considerations
Aero vs Crosswind: 45mm depth saves about 3.5W versus a 35mm rim at 40km/h, and the 30mm inner width pairs with 28–38mm tyres; at 10° yaw the 36mm outer width adds noticeable crosswind pull versus a 28mm-wide rim, so expect more steering input in gusts.
Weight vs Stiffness: The Extreme Light tier (375g) saves about 75g versus the Normal tier (450g) at the same 45mm depth (±5g); lateral stiffness holds within 4% across tiers.
Tire-Type Trade-off: The hooked bead mounts clincher or tubeless tyres from about 28c to 38c; tubeless cuts rolling resistance and pinch flats but needs tape, valve and sealant to seal the bed.
Sourcing & Delivery Trade-off: Stock drilling ships in 1–3 business days at $320; a custom spoke-hole count, valve bore 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: 110 kgs
Recommended Use Cases
Climbing / Hill Repeats: Good
Gran Fondo / Endurance: Excellent
Road Racing: Excellent
Sprinting / Criterium: Good
Training / Daily Riding: Good
Not Recommended For: Not recommended for heavy off-road or loaded touring
Compatibility
Frame Compatibility: 700c road or gravel frames with rim or disc brakes
Tire Type: Tubeless-ready clincher
Tire Width Range: 35-48c
Brake Standard: Rim or Disc (depending on variant)
Drivetrain: Compatible with any drivetrain (hub dependent)
Rotor Standard: Disc rotor mounts (if disc variant)
How It Compares
ModelWeightDepthWidthPrice
700C 45mm Rim 36mm Normal 450g, Super Light 425g, Ultra Light 395g, Extreme Light 375g 45mm 36mm See store
Model A ~430g 50mm 28mm $1,399
Model B ~430g 50mm 27mm $249
Model C ~420g 50mm 30mm $389
FAQ
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 is the maximum spoke tension for 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 rim bead area uses a thickened impact-reinforced layer; impact testing passes >40J extreme impacts (above the ISO 30J standard). Inner widths of 30mm accept wider tyres, which deform to absorb shock at low pressure.
What tyres can I mount on this rim, and what pressure should I run?
The 30mm inner width supports tyres from 28c to 38c, ideal for mixed road and gravel use.
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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