BOLA 32er Asymmetric Carbon MTB Rim | 30mm Internal Hookless Tubeless
BOLA 32er Asymmetric Carbon MTB Rim | 30mm Internal Hookless Tubeless
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Bola 32in (696mm BSD) asymmetric U MTB rim, 36/30mm, hookless, 350/450g, tubeless, trail/enduro.
The Big-Wheel Hoop
A 32-inch (696mm BSD) asymmetric U-shaped rim—36mm external, 30mm internal—for trail, enduro and freeride. Toray UD carbon; hookless tubeless.
Buying Guide.
Weight tier - Superlight ~350g: for trail racers and XC-adjacent riders who chase climbs and trim rotational mass, at the cost of a thinner impact margin.
Weight tier - Standard ~450g: choose it for enduro, freeride and rougher trail where rocks outweigh grams; it laughs off the hits the superlight would flinch at.
Internal width - 30mm: pairs with wide 2.3-2.8in trail tires at low pressure for grip on roots and loam.
Same family - the Bola 29er 36x30 wave rim is the 29in cousin; choose this 32er only if your frame clears the bigger wheel and you want the largest rolling hoop.
Target Audience & Usage Notes.
Trail, enduro, freeride, bikepacking.
Not road.
The Ride That Awaits.
Build it up, roll it into the trees, and you will find the big 32in hoop tracks roots and rock gardens with a confidence that borders on the theatrical - the hookless bed holding fat rubber at a whisper of pressure while the offset keeps the wheel true under hammering. Land that drop, hear the carbon thump, and trust it. A 3-year rim warranty and free shipping turn hesitation into a booking.
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- Material: Toray UD carbon
- Rim depth: 30mm
- External width: 36mm
- Internal width: 30mm
- Size: 32 inch
- Profile: asymmetric U-shaped
- Weight Tier: 350g / 450g
- Max Tire Pressure: 75
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- Weight vs Durability: Superlight layup (350g) reduces rotating weight for climbers, but standard layup (450g) offers increased impact resistance for aggressive riding.
- Stiffness vs Compliance: The 30mm rim height and asymmetric U-shape provide high lateral stiffness for precise cornering, while the tubeless hookless design allows lower tire pressures for improved vertical compliance.
- Tire Volume vs Speed: The 30mm inner width supports up to 2.8" tires for maximum traction and volume, but wider tires increase rolling resistance; narrower 2.3" tires offer faster acceleration.
- Price vs Grade: Bola offers two carbon layups at different price points, allowing riders to choose between a premium superlight version and a more affordable standard version without sacrificing structural integrity.
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- 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: N/A
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- Trail Riding: Excellent
- Enduro Racing: Good
- Freeride/Downhill: Suitable
- Bikepacking: Suitable
- Training / Daily Riding: Good
- Not Recommended For: Not recommended for road racing or high-speed aero events.
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- Frame Compatibility: Designed for 32" (696mm BSD) wheel size, compatible with frames and forks that accommodate 32" MTB wheels. For 29+ setups, verify clearance.
- Tire Type: Tubeless-ready, hookless, compatible with tubeless and standard tires with inner tubes.
- Tire Width Range: 2.3" – 2.8"
- Brake Standard: Disc brake only (rotor and caliper not included).
- Drivetrain: N/A – rim only, compatible with any drivetrain via hub selection.
- Rotor Standard: Compatible with 6-bolt or centerlock rotors depending on hub used (not included).
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|---|---|---|---|---|---|---|---|
| 32er Asymmetric | — | — | — | 350g / 450g | 30mm | 30mm | see store |
| M30 | — | — | — | 380g | 30mm | 30mm | ~$400 |
| 3Zero Moto | — | — | — | 450g | 30mm | 30mm | ~$350 |
| Control | — | — | — | 420g | 30mm | 30mm | ~$300 |
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What is the recommended tubeless setup for the BOLA 32er carbon rim?
Use a tubeless-compatible tire and sealant, with 2.3-2.8" tires. Ensure the rim tape is properly installed, then mount the tire and inflate to a seating pressure (around 60-80 psi) to set the bead, then reduce to your desired riding pressure (typically 20-35 psi for trail/enduro). The hookless design allows lower pressures without pinch flats.
Which tire widths are compatible with this rim?
The rim has a 30mm inner width, designed for 2.3-2.8" tires. It provides optimal tire support and stability for these sizes, accommodating both narrower and wider options within that range.
How much weight does the superlight layup save compared to the standard?
The superlight layup weighs 350g, while the standard is 450g, saving 100g per rim. This reduces rotating mass, improving acceleration, but the standard layup is slightly more robust for aggressive riding.
Can I build this rim with custom spoke counts and hubs?
Yes, BOLA offers custom build options for spoke counts and hubs. You can order the rim as a standalone and have it built to your specifications, or choose from pre-built wheelsets. Contact BOLA for OEM and custom builder inquiries.
How do I maintain and inspect the carbon rim for damage?
Regularly check for cracks, delamination, or impact damage. Use a coin tap test or feel for soft spots. Clean with mild soap and water, avoid harsh chemicals. If you hit a severe impact, inspect the rim immediately. The rim has a 3-year warranty against structural defects, but normal wear and crash damage are not covered.
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