• Bola 700c 45mm Carbon Road Rim – 34mm Outer, 28mm Inner, Tubeless Ready
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700C Carbon 50mm Road Rim 36/30mm Wide Tubeless-Ready | Bola

700C Carbon 50mm Road Rim 36/30mm Wide Tubeless-Ready | Bola

$320.00 USD
$360.00 USD $320.00 USD
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Free shipping  |  VAT included in EU & USA
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Weight

A 50mm V/U-shaped hookless-compatible carbon road rim with 36/30mm widths, tubeless-ready, and four weight tiers 395–490g.

Focused Aero, Modern Tire Width

The BOLA 50mm road rim pairs a deep aerodynamic profile with a 36mm external and 30mm internal width for modern 35c–48c road tires. The V/U-shaped hookless-compatible profile supports tubeless setups with proper tape and valves.

Buying Guide.

Weight tier - Extreme Light ~395g: lightest build for smooth-road racers.

Weight tier - Ultralight ~410g: climbing with aero aspirations.

Weight tier - Superlight ~450g: balanced all-round.

Weight tier - Normal ~490g: the durable, higher-load choice.

Depth - deep aero: a flat-course weapon; in wind or on climbs it demands more respect than the shallower Bola rims.

Build - disc frames only: plan extended valves for the deep section.

Target Audience & Usage Notes.

Road racers, triathletes on flat/rolling courses, and criterium riders.

Not for steep climbs where minimal weight is critical.

The Ride That Awaits.

Drop onto the drops and hold the line - that deep V-section carries speed like a secret, the wide bed swallowing 35-48c tires so the rough road stops mattering and only the forward push remains. It is purposeful, composed, fast. Backed by a 3-year warranty with crash cover and free shipping, it is ready when you are.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 50mm
Bead Type: Hooked
Inner Width: 30mm
Outer Width: 36mm
ERD (Effective Rim Diameter): 538mm
Weight Tier: Normal 490g / Superlight 450g / Ultralight 410g / Extreme Light 395g
Trade-offs & Considerations
Aero vs Crosswind: The 50mm V/U profile saves about 4.5W versus a 35mm rim at 40km/h; at 10° yaw the 36mm outer width keeps steering input predictable on exposed descents, at the cost of a higher crosswind signature than a 40mm rim.
Weight vs Stiffness: The Extreme Light tier (395g) saves about 95g versus the Normal tier (490g) at the same 50mm depth (±5g); lateral stiffness holds within 3% across tiers, so the lightest build keeps the same rim structure.
Tire-Type Trade-off: The hooked bead accepts clincher and tubeless tyres from about 28c to 32c on the 30mm inner width; 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 $320; 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: 120kgs
Recommended Use Cases
Sprinting / Criterium: Excellent
Triathlon / TT: Excellent
Road Racing: Excellent
Gran Fondo / Endurance: Good
Climbing / Hill Repeats: Suitable
Not Recommended For: Not recommended for steep climbs where minimal weight is critical.
Compatibility
Frame Compatibility: 700c (ISO 622) road frames with disc brake mounts
Tire Type: Tubeless-ready, hookless-compatible clincher tires
Tire Width Range: 35c-48c
Brake Standard: Disc brake
Drivetrain: Compatible with any drivetrain when built with compatible freehub
Rotor Standard: N/A (rim only, rotor mounts on hub)
How It Compares
ModelWeightDepthWidthPrice
700C 50mm Rim 36mm Normal 490g / Superlight 450g / Ultralight 410g / Extreme Light 395g 50mm 36mm 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 30mm inner rim, and what pressure suits me?
The 30mm inner width is optimised for modern road tyres, 25c–32c; it is a hooked bed, so standard clinchers and tubeless both mount directly.
How do I work out the right spoke length for this rim?
The ERD is 538mm, measured on our standard basis. Use a known calculator (Sapim / DT) and add the manufacturer-recommended correction for this rim.
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.
Do these rims accept standard clincher tyres, and is there a pressure cap?
Hooked rims fit standard clincher tyres directly, no hookless pressure cap applies.
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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