BOLA 29er Carbon MTB Rim | 36mm Wide, 20/25mm Wave

Q: How do I set up these rims tubeless?

The rims are tubeless-ready with a 6.5mm Presta valve hole. Use standard tubeless tape and valves. Apply tape around the rim bed, install tires, add sealant, and inflate to recommended pressure of 45-65 psi. The 30mm inner width helps hold the tire bead securely.

Q: What tire sizes are compatible?

These 29er rims have a 36mm outer and 30mm inner width, compatible with 2.0-2.6" MTB tires. The 30mm inner width works well with modern 2.2-2.6" tires for improved traction and reduced pinch-flat risk.

Q: How much weight can I save compared to standard rims?

The rim is available in four weight tiers: 380g, 350g, 325g, and 300g. Choosing the Extreme Light (300g) over the Standard (380g) saves 80g per rim (about 21%). For a wheelset, that's a 160g savings, which can noticeably improve acceleration on climbs.

Q: Can I build custom wheels with these rims?

Yes, the rim has a 28-hole drilling and is compatible with J-bend and straight-pull spokes. The ERD is 589mm and spoke-hole diameter is 4.5mm (customizable). You can choose the weight tier and wave height (20mm or 25mm) to tailor stiffness and weight to your riding style.

Q: How do I maintain and inspect these carbon rims?

Regularly inspect for cracks, chips, or delamination, especially after impacts. Check spoke tension to ensure even stress. Clean with mild soap and water; avoid harsh chemicals. The rim has internal QC for flatness <0.15mm and roundness <0.3mm, but continue regular checks. Maximum rider weight is 120kg, so heavier riders should choose heavier weight tiers for durability.

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$320.00 USD

~~$360.00 USD~~ $320.00 USD

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Weight Standard Superlight Ultralight

A 29er carbon MTB rim with 36/30mm widths, wave profile (20/25mm heights), tubeless-ready, and four weight tiers 300–380g for XC and trail.

Trail-Ready Carbon Hoop

The BOLA 29er carbon MTB rim reshapes 2.2–2.6" tires for stronger cornering grip and reduced pinch-flat risk. Its wave profile (20mm or 25mm height options) balances low drag and lateral stiffness for XC, trail and light enduro.

Buying Guide.

Weight tier - Extreme Light ~300g: competitive XC, the thinnest impact margin.

Weight tier - Ultralight ~325g: XC race and fast trail.

Weight tier - Superlight ~350g: the trail balance.

Weight tier - Standard ~380g: all-mountain and light enduro durability.

Profile height - low wave for XC low drag; tall wave for trail stiffness and support under wide tires.

Internal width - 30mm: pairs with 2.0-2.6in tires at low pressure for cornering grip.

Same family - the Bola 32er asymmetric MTB rim is the larger-wheel cousin; choose this 29er unless your frame clears the bigger 32er.

Target Audience & Usage Notes.

XC racers, trail riders and light enduro enthusiasts.

Not for heavy downhill abuse or road racing.

The Ride That Awaits.

Point it into the singletrack and let the wave profile eat the bumps - wide MTB rubber at low pressure gripping roots and corners while the stiff rim answers every pump and bunny hop. You come out the other side with more speed and more confidence. Rated to a real rider weight and backed by a 3-year warranty with free shipping: build it and ride.

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Material: Carbon
Rim depth: 20/25mm
External width: 36mm
Internal width: 30mm
Size: 29er
Profile: Wave
Weight Tier: Standard 380g, Superlight 350g, Ultralight 325g, Extreme Light 300g
Max Tire Pressure: 75

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Weight vs Durability: Standard weight 380g offers maximum impact durability; Extreme Light at 300g reduces mass by ~21% but narrows safety margin for heavy impacts.
Stiffness vs Compliance: 20mm wave height prioritizes lower drag and lighter feel; 25mm wave height provides stiffer lateral platform for trail and light enduro.
Tire Volume vs Weight: 30mm inner width allows 2.2-2.6" tires for better traction and pinch-flat resistance, but may add weight compared to narrower rims.
Versatility vs Specialization: Offers four weight tiers and two wave heights to tune for XC, trail, or light enduro, but not specialized for heavy downhill.

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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: 110kgs

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Gravel Racing: Excellent
Bikepacking: Good
Gran Fondo / Endurance: Suitable
Road Racing: Not recommended
Training / Daily Riding: Good
Not Recommended For: Road racing and heavy downhill abuse

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Frame Compatibility: 29er mountain bike frames (ISO 622)
Tire Type: Tubeless-ready, for 2.2-2.6" MTB tires
Tire Width Range: 2.0–2.6 inches
Brake Standard: Disc brake only
Drivetrain: Compatible with standard MTB drivetrains
Rotor Standard: N/A

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Bola 29er Carbon Rim	N/A	28H	N/A	380g	20/25mm	30mm	see store
Hyper 30	N/A	28H	N/A	360g	25mm	30mm	~$350
Gravel 30	N/A	28H	N/A	370g	25mm	30mm	~$320
Edge 30	N/A	28H	N/A	350g	25mm	30mm	~$380

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How do I set up these rims tubeless?

The rims are tubeless-ready with a 6.5mm Presta valve hole. Use standard tubeless tape and valves. Apply tape around the rim bed, install tires, add sealant, and inflate to recommended pressure of 45-65 psi. The 30mm inner width helps hold the tire bead securely.

What tire sizes are compatible?

These 29er rims have a 36mm outer and 30mm inner width, compatible with 2.0-2.6" MTB tires. The 30mm inner width works well with modern 2.2-2.6" tires for improved traction and reduced pinch-flat risk.

How much weight can I save compared to standard rims?

The rim is available in four weight tiers: 380g, 350g, 325g, and 300g. Choosing the Extreme Light (300g) over the Standard (380g) saves 80g per rim (about 21%). For a wheelset, that's a 160g savings, which can noticeably improve acceleration on climbs.

Can I build custom wheels with these rims?

Yes, the rim has a 28-hole drilling and is compatible with J-bend and straight-pull spokes. The ERD is 589mm and spoke-hole diameter is 4.5mm (customizable). You can choose the weight tier and wave height (20mm or 25mm) to tailor stiffness and weight to your riding style.

How do I maintain and inspect these carbon rims?

Regularly inspect for cracks, chips, or delamination, especially after impacts. Check spoke tension to ensure even stress. Clean with mild soap and water; avoid harsh chemicals. The rim has internal QC for flatness <0.15mm and roundness <0.3mm, but continue regular checks. Maximum rider weight is 120kg, so heavier riders should choose heavier weight tiers for durability.

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