Skip to product information
1 of 6

700c Carbon Tubeless Rim — 50mm Depth, 30mm Wide | Bola

700c Carbon Tubeless Rim — 50mm Depth, 30mm Wide | Bola

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

The Bola 700c carbon tubeless road rim — a 50mm-deep, 30mm-wide aero hoop in Toray carbon (375-470g) for aero road and gravel builds.

Deep enough to fly, light enough to climb: a 50mm V-profile pays back on the flats and in the pack, yet Bola offers it in layups from 375g to 470g so you need not suffer on the ascents.

Buying Guide.

Weight tier - Extreme Light ~375g: the Ultralight climb build - carry the deepest section on the flat while keeping the climbs tolerable.

Weight tier - Ultralight ~400g: the race middle - a touch more margin without losing the light-and-fast aero feel.

Weight tier - Superlight ~430g: the training-and-race balance - choose it when the wheel sees both fast group rides and longer training.

Weight tier - Normal ~470g: the Midweight durability build - rougher roads and larger riders who want impact margin on a deep aero rim.

Internal width - 24 or 25mm: choose the narrower channel for a faster, rounder race tire, the wider for a more voluminous 28-32c on mixed roads.

Same-depth series: pair with the Bola 700c 50mm 28mm-outer rim ($310) for a narrower, lighter 50mm alternative.

Adjacent depth: step to the 40mm or 45mm rim ($310) if crosswinds worry you; the 60mm rim goes deeper on flat, straight courses.

Rated to a 120kg rider weight.

Target Audience & Usage Notes.

Road racing, triathlon/TT and fast gran fondos; not pure climbing.

Tubeless 27c-42c; max rider weight 120kg; disc only.

The Ride That Awaits.

Hold it at speed and feel the aero section hold the road like it is hooked on the wind - spins up willingly, then settles into the draft with the calm of a far deeper wheel. The wide bed smooths 27-42c tires into one fast, modern shape. Pick your layup and inner width; a 3-year rim warranty keeps the build worry-free.

Specifications
Size: 700c
Material: Genius Toray carbon fiber
Rim Depth: 50mm
Bead Type: Hooked
Inner Width: 24–25mm
Outer Width: 30mm
ERD (Effective Rim Diameter): 538mm
Weight Tier: Normal (470g), Superlight (430g), Ultralight (400g), Extreme Light (375g)
Trade-offs & Considerations
Aero vs Crosswind: 50mm depth saves about 4.5W versus a 35mm rim at 40km/h; at 10° yaw the 30mm 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 (375g) saves about 95g versus the Normal tier (470g) 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 25c to 32c and supports higher pressure than hookless designs; 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: 120kgs
Recommended Use Cases
Sprinting / Criterium: Good
Triathlon / TT: Excellent
Road Racing: Good
Gran Fondo / Endurance: Suitable
Climbing / Hill Repeats: Not recommended
Not Recommended For: Not recommended
Compatibility
Frame Compatibility: 700c road and gravel frames
Tire Type: Tubeless (hookless-compatible)
Tire Width Range: 27c-42c
Brake Standard: Disc brake only
Drivetrain: Compatible with all major road groupsets (via hub choice)
Rotor Standard: Determined by hub (centerlock or 6-bolt)
How It Compares
ModelWeightDepthWidthPrice
700C 50mm Rim 30mm Normal (470g), Superlight (430g), Ultralight (400g), Extreme Light (375g) 50mm 30mm 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 a deep aero rim handle crosswinds — will it tug the steering on fast descents?
An optimised aero profile keeps steering torque predictable at 10°–15° yaw, so high-speed descents stay planted and controlled.
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
View full details