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BOLA 29er Asymmetric Carbon MTB Rim | 36mm Wide, 30mm Internal

BOLA 29er Asymmetric Carbon MTB Rim | 36mm Wide, 30mm Internal

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Regular price $310.00 USD
Regular price $350.00 USD Sale price $310.00 USD
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The Bola 29er asymmetric carbon MTB rim — a 30mm internal, 30mm-high balanced-spoke hoop in Toray UD carbon (385-455g) for trail, enduro and freeride.

An asymmetric spoke bed evens the pull of drive and non-drive spokes, so the wheel stays truer longer. This 29er Bola rim pairs that balance with a 30mm inner channel for 2.3"-2.6" tires.

Buying Guide.

Weight tier - Superlight ~385g: the Light-grade acceleration build - about 70g of rotational saving over standard, for trail riders who climb as much as they descend.

Weight tier - Standard ~455g: the Midweight durability build - choose it for aggressive trail/enduro and heavier riders who want a truer, longer-lasting hoop.

Tire & terrain: the channel cradles 2.3-2.6" at moderate pressure - a versatile trail-to-enduro platform rather than a narrow XC racing rim.

Same-family: this asymmetric 30mm sits between the XC-focused 27mm rim and the wide 34mm enduro rim in the 29er line - step one way for speed, the other for grip.

Rated to a 110kg system weight.

Target Audience & Usage Notes.

Trail, enduro and freeride riders upgrading from alloy or worn carbon; shops and OEM builds.

Max system weight 110kg; disc only.

The Ride That Awaits.

Stand on your pedals and feel the offset bed pull straight - no wandering, no wriggle, just a wheel that holds its true season after season of abuse. Run lower tubeless pressure and it tracks rough corners like it is on rails, holding tension through the long descents. Lace it to a modern 29er hub and let the 3-year rim warranty do the worrying.

Specifications
Size: 29er
Material: Genius Toray carbon fiber
Rim Depth: 30mm
Bead Type: Hookless
Inner Width: 30mm
Outer Width: 36mm
ERD (Effective Rim Diameter): 579
Weight Tier: Standard 455g, Superlight 385g
Trade-offs & Considerations
Aero vs Crosswind: The 30mm profile stays aero-neutral at trail speeds; the wider 36mm external shape is traded for 2.3-2.6in tyre volume and cornering support rather than speed.
Weight vs Stiffness: The Superlight tier (385g) saves about 70g per rim versus the Standard lay-up (455g) (+/-5g); the Standard build keeps the grams for enduro and freeride impact durability.
Tire-Type Trade-off: The hookless bead is tubeless-only and pairs with hookless-rated 2.3-2.6in tyres; lower-pressure tubeless traction improves grip but needs compatible tyres, tape and sealant and respects a pressure cap.
Sourcing & Delivery Trade-off: Stock drilling ships in 1-3 business days at $310; custom spoke-hole drilling or a decal finish adds 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: >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: >100 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
Trail / All-Mountain Build: The 30mm hookless internal bed runs 2.3-2.6in tubeless tyres at low trail pressure, and the 36mm external width gives cornering support on singletrack.
Enduro / Aggressive Build: Choose the 455g Standard lay-up; impact testing passes over 60J, above the ISO 4210-7 reference, and the asymmetric offset balances rear spoke tension under disc braking.
XC / Marathon Build: The 385g Superlight lay-up saves about 70g per rim versus the 455g Standard build for faster trail and marathon riding.
Not Recommended For: Non-hookless tyres without a hookless-rated sidewall (this bead is tubeless-only) and heavy downhill loads - max system weight is 110kg.
Compatibility
Frame Compatibility: 29er mountain bike frames with disc brake mounts
Tire Type: Tubeless-ready clincher
Tire Width Range: 2.3-2.6 inches
Brake Standard: Disc
Drivetrain: Compatible with standard MTB drivetrains (Shimano, SRAM, etc.)
Rotor Standard: Disc rotor compatible (6-bolt or centerlock, depending on hub)
How It Compares
ModelWeightDepthWidthPrice
29er 30mm Rim 36mm Standard 455g, Superlight 385g 30mm 30mm See store
DT Swiss XRC 1200 Spline 1303g 20mm 30mm inner (36mm outer) €2,499
Mavic Crossmax Carbon 1395g 25mm 30mm $3,049
Fulcrum Red Zone Carbon 1445g 26mm 27mm €1,434
FAQ
Which tyres fit on the 30mm inner rim, and what pressure suits me?
The 30mm inner width is made for 2.3"–2.6" trail and enduro tyres; being hookless, seat only ETRTO hookless-rated tubeless tyres and run them at low trail pressure.
How do I work out the right spoke length for this rim?
Contact Bola for the exact ERD before ordering spokes. Once we confirm the figure, plug it into a known calculator (Sapim / DT) and add the recommended correction.
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.
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 30mm 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, 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 within 1 year of the original purchase date
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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