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  • BOLA 32er 45mm Carbon Road Rim | 38mm Outer 32mm Inner Tubeless Bola
  • BOLA 32er 45mm Carbon Road Rim | 38mm Outer 32mm Inner Tubeless Bola
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BOLA 32er 45mm Carbon Road & Gravel Rim | 38mm Wide

BOLA 32er 45mm Carbon Road & Gravel 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

Bola 32in (696mm) 45mm asymmetric U carbon rim, 38/32mm, ERD 612mm, 445-530g, tubeless.

The 32in Aero Wide

A 45mm asymmetric U rim—38mm external, 32mm internal—on a 32-inch (ISO 696mm BSD) platform. Toray T700 UD carbon; ERD 612mm.

Buying Guide.

Weight tier - Light ~445g: for endurance riders who want a lively wide gravel build without a tank-like feel.

Weight tier - Durable ~530g: choose it for rough chipseal, loaded mixed-surface days and larger riders who want impact margin.

Internal width - 32mm: this is a wide bed built for fat gravel rubber; run the widest tire you have for comfort, the narrowest the course allows for speed.

Adjacent depth - on this wide platform the shallower builds favor climbing; this section trades a little acceleration for stability and all-day comfort.

Target Audience & Usage Notes.

Endurance road, gravel, mixed-surface.

Not heavy off-road.

The Ride That Awaits.

String it between your fingers and spin it: a wide, calm rim that swallows 37-52mm rubber and turns rough tarmac into a boulevard. Stand on the pedals and it accelerates without a whimper, the wide bed purring over surfaces that would bruise a narrower wheel. Rated to a real system weight, tubeless-ready and backed by a 3-year warranty with free shipping - order it and watch the miles fly.

Specifications
Size: 32er
Material: Genius Toray carbon fiber
Rim Depth: 45mm
Bead Type: Hooked
Inner Width: 32mm
Outer Width: 38mm
ERD (Effective Rim Diameter): 612
Weight Tier: 445-530g
Trade-offs & Considerations
Aero vs Crosswind: The 45mm depth saves about 4.0W versus a 35mm rim at 40km/h; the 38mm outer width broadens the tyre bed but raises the crosswind signature versus a 30mm rim, so it favours flatter, faster rolling courses over very exposed twisting descents.
Weight vs Stiffness: The lightest 445g layup saves about 85g versus the 530g option at the same 45mm depth (±5g); the asymmetric U-profile balances 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 and supports higher pressure than hookless; 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: >200 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: 110kgs
Recommended Use Cases
Climbing / Hill Repeats: Suitable
Gran Fondo / Endurance: Excellent
Road Racing: Good
Sprinting / Criterium: Suitable
Training / Daily Riding: Excellent
Not Recommended For: Not recommended for heavy off-road or downhill disciplines
Compatibility
Frame Compatibility: 32er Road and gravel frames with disc brake mounts
Tire Type: Tubeless and clincher
Tire Width Range: 37-52mm
Brake Standard: Disc brake (6-bolt and Centerlock compatible)
Drivetrain: Depends on hub (not determined by rim)
Rotor Standard: 6-bolt or Centerlock
How It Compares
ModelWeightDepthWidthPrice
32er 45mm Rim 38mm 445-530g 45mm 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
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