• BOLA 32er 50mm Carbon Road & Gravel Rim | 38mm Outer, 32mm Inner, Tubeless Ready Bola
  • BOLA 700C carbon road rim, matte finish, detailed hooked tubeless bead seat compatibility
  • 40mm BOLA carbon road rim, matte UD carbon finish, close-up on fiber layup and rim wall detail
  • BOLA 32er 45mm Carbon Road Rim | 38mm Outer 32mm Inner Tubeless Bola
  • BOLA 32er 45mm Carbon Road Rim | 38mm Outer 32mm Inner Tubeless Bola
1 6

Bola 32er 50mm Asymmetric Carbon Tubeless Rim | 38mm Wide

Bola 32er 50mm Asymmetric Carbon Tubeless Rim | 38mm Wide

$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 32er 50mm carbon rim - a 50mm deep, 38mm-external / 32mm-internal wide tubeless rim in 475-570g layups, for wide all-road and mixed-surface builds.

A wide-mouthed 50mm rim built for riders who reject the tyranny of the skinny tyre - broad, planted, and ready for whatever the mixed road throws down.

Buying Guide.

Weight tier - light ~475g (Midweight): for acceleration and endurance all-road miles.

Weight tier - heavy ~570g (Heavy): for rough gravel and larger riders who want impact margin.

Internal width - 32mm: 37-52mm at ~40-65 PSI for wide all-road and gravel.

Use it when you want a deep aero section paired with modern wide rubber; leave it for narrow-tyre road purity.

Adjacent size: the 32er 45mm rim ($310) is shallower and calmer in crosswinds.

Confirm final geometry against the spec table before lacing; respect the system weight limit.

Target Audience & Usage Notes.

wide all-road, gravel and mixed-surface wheel builders.

Disc frames only; choose 6-bolt or Center Lock hub. 120kg system limit.

Not for technical mountain trails.

The Ride That Awaits.

Set it tubeless with a 45c tyre and the bike plants itself, rolling over chattery road like a canoe on still water.

You stop thinking about the surface and start thinking about the horizon.

Free shipping and a 3-year rim warranty smooth the build.

Specifications
Size: 32er
Material: Genius Toray carbon fiber
Rim Depth: 50mm
Bead Type: Hooked
Inner Width: 32mm
Outer Width: 38mm
ERD (Effective Rim Diameter): 602
Weight Tier: 475-570g
Trade-offs & Considerations
Aero vs Crosswind: The 50mm depth saves about 4.5W versus a 35mm rim at 40km/h; at 10° yaw the 38mm outer width keeps the tyre bed broad but the deeper section carries a stronger crosswind signature, suiting flatter rolling courses over exposed windy descents.
Weight vs Stiffness: The lightest 475g layup saves about 95g versus the 570g option at the same 50mm depth (±5g); the asymmetric profile balances rear spoke tension and lateral stiffness holds within 5% across the layup range.
Tire-Type Trade-off: The hooked bead accepts 28-32c clincher and tubeless tyres up to about 110 psi; 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; a custom spoke-hole count or decals add 7-15 business days and a roughly $40-80 premium.
Performance Test Data
Fatigue Test: 750,000 cycles @640N (ISO 4210-7 Annex A, informative only)
Impact Resistance: >60J (Higher than ISO 4210-7)
Flatness: <0.25mm (internal QC)
Roundness: <0.3mm (internal QC)
Max Spoke Tension: >350 kgf (internal QC, spoke breaking tension)
Ultimate Strength: >300 kgf (internal QC, static spoke-hole point load)
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: Good
Climbing / Hill Repeats: Not recommended
Not Recommended For: Technical mountain trails
Compatibility
Frame Compatibility: Compatible with modern road and gravel frames designed for disc brakes.
Tire Type: Tubeless-ready and clincher capable.
Tire Width Range: 37-52mm recommended.
Brake Standard: Disc brake, 6-bolt and Centerlock compatible.
Drivetrain: Compatible with standard road/gravel drivetrains.
Rotor Standard: 6-bolt or Centerlock.
How It Compares
ModelWeightDepthWidthPrice
32er 50mm Rim 38mm 475-570g 50mm 38mm 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.
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 >60J extreme impacts (above the ISO 30J standard). Inner widths of 32mm 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, 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