700C 35/40mm Carbon Gravel Wave Rim 34/28mm Wide | Bola

Q: What tire sizes are compatible with this rim?

The rim has a 25mm internal width and supports tires from 28mm to 50mm. It is designed for tubeless setups, allowing lower pressures for better traction. For example, a 40mm gravel tire works well at 30-40 psi.

Q: How does the rim weight affect performance?

Weight ranges from 370g (Extreme Light) to 440g (Standard). Lighter rims reduce rotating mass, improving acceleration and climbing, but may be less impact-resistant. Choose based on your riding style and weight.

Q: Can I build this rim with any hub?

Yes, it has 24 spoke holes and standard 4.5mm spoke holes. It is designed for disc brakes, so use a disc-specific hub. The rim is compatible with both 6-bolt and centerlock hubs depending on your spoke choice.

Q: What is the maximum pressure for this rim?

The recommended tire pressure range is 100-125 psi, but for gravel use, much lower pressures (30-60 psi) are typical to increase traction and comfort.

Q: How do I maintain the carbon rim?

Regularly inspect for impact damage, especially after rough rides. Clean with mild soap and water. Check spoke tension periodically. Avoid brake heat as it's disc-specific, so no brake track issues.

$310.00 USD

~~$350.00 USD~~ $310.00 USD

Sale Sold out

Free shipping | VAT included in EU & USA

Weave UD Matt UD Glossy Marble Matt Marble Glossy

Weight Standard Superlight Ultralight Extremelight

A gravel wave-profile carbon rim with 34/25mm widths, 35/40mm depth options, tubeless-ready, and four weight tiers 370–440g.

Tailored Mixed-Surface Rim

The BOLA 34mm gravel rim stabilizes modern 29–44mm gravel tires for confident riding on loose or variable surfaces. Choose 35mm or 40mm profile depth, with four layup grades from 370g to 440g.

Buying Guide.

Weight tier - Extreme Light ~370g: competitive weight-optimized gravel.

Weight tier - Ultralight ~390g: race-day gravel.

Weight tier - Superlight ~415g: endurance all-day.

Weight tier - Standard ~440g: the most forgiving training build.

Depth - choose the shallower wave for crosswind stability on open terrain, or the deeper wave for more aero on fast gravel.

Build - light, low-load drilling: not for heavy abuse or big bikepacking loads.

Target Audience & Usage Notes.

Gravel racers, bikepackers and mixed-surface endurance riders.

Not for heavy downhill or aggressive riding due to 24H spoke count.

The Ride That Awaits.

Roll onto a gravel start line and feel the wave section hold its line over loose drag, the wide bed supporting 29-44mm tires at a grip that refuses to let go. It is light enough to chase the break, calm enough to finish it. A 3-year warranty and free shipping mean you only need to bring the legs.

Translation missing: en.product.metafields.specifications

Material: Toray UD Carbon
Rim depth: 35&40mm
External width: 34mm
Internal width: 25mm
Size: 700c
Profile: Wave
Weight Tier: Standard (440g), Superlight (415g), Ultralight (390g), Extreme Light (370g)
Max Tire Pressure: 90

Translation missing: en.product.metafields.tradeoffs

Weight vs Durability: Lighter layups (Extreme Light 370g) sacrifice some impact resistance compared to Standard (440g) which provides more margin.
Aero vs Crosswind: 40mm depth offers more aero benefit on flats but is more crosswind-sensitive than 35mm.
Tire Volume vs Speed: 25mm internal width supports 28-50mm tires for more volume and traction, but narrower tires roll faster on smooth surfaces.
Price vs Grade: Higher-grade layups and custom options increase cost; Standard layup offers best value.

Translation missing: en.product.metafields.performance

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: 105kgs

Translation missing: en.product.metafields.usecases

Gravel Racing: Excellent. Wide 25mm internal width supports up to 50mm tires for traction, and 35mm depth limits crosswind.
Bikepacking: Good. Wide tire clearance and sturdy build, but heavier layups may be preferred for durability.
Gran Fondo / Endurance: Suitable. 35mm depth and wide internal rim add comfort, but not as aero as deeper rims.
Road Racing: Not recommended. Designed for gravel, not optimal for road racing where aero and weight are critical.
Training / Daily Riding: Suitable. Durable construction and tubeless-ready design make it practical for everyday use.
Not Recommended For: Not for heavy downhill or aggressive riding due to lower spoke count (24H).

Translation missing: en.product.metafields.compatibility

Frame Compatibility: Compatible with 700c disc brake frames designed for gravel or road use.
Tire Type: Tubeless-ready clincher tires.
Tire Width Range: 29-44mm.
Brake Standard: Disc brake only.
Drivetrain: Compatible with standard road/gravel drivetrains (not specified).
Rotor Standard: N/A (rim does not include rotor).

Translation missing: en.product.metafields.compares

Translation missing: en.product.metafields.model	Translation missing: en.product.metafields.hub	Translation missing: en.product.metafields.spoke	Translation missing: en.product.metafields.bearing	Translation missing: en.product.metafields.weight	Translation missing: en.product.metafields.depth	Translation missing: en.product.metafields.width	Translation missing: en.product.metafields.price
700c 34mm Carbon Gravel Rim	N/A	N/A	N/A	370-440g	35&40mm	25mm	see store
AG28	N/A	N/A	N/A	420g	30mm	33mm	~$750
303 XPLR	N/A	N/A	N/A	400g	32mm	30mm	~$650
Terra CLX	N/A	N/A	N/A	370g	36mm	30mm	~$550

Translation missing: en.product.metafields.faq

What tire sizes are compatible with this rim?

The rim has a 25mm internal width and supports tires from 28mm to 50mm. It is designed for tubeless setups, allowing lower pressures for better traction. For example, a 40mm gravel tire works well at 30-40 psi.

How does the rim weight affect performance?

Weight ranges from 370g (Extreme Light) to 440g (Standard). Lighter rims reduce rotating mass, improving acceleration and climbing, but may be less impact-resistant. Choose based on your riding style and weight.

Can I build this rim with any hub?

Yes, it has 24 spoke holes and standard 4.5mm spoke holes. It is designed for disc brakes, so use a disc-specific hub. The rim is compatible with both 6-bolt and centerlock hubs depending on your spoke choice.

What is the maximum pressure for this rim?

The recommended tire pressure range is 100-125 psi, but for gravel use, much lower pressures (30-60 psi) are typical to increase traction and comfort.

How do I maintain the carbon rim?

Regularly inspect for impact damage, especially after rough rides. Clean with mild soap and water. Check spoke tension periodically. Avoid brake heat as it's disc-specific, so no brake track issues.

Translation missing: en.product.metafields.warranty

Translation missing: en.product.metafields.period_label: Translation missing: en.product.metafields.period_value
Translation missing: en.product.metafields.coverage_label: Translation missing: en.product.metafields.coverage_value
Translation missing: en.product.metafields.crash_label: Translation missing: en.product.metafields.crash_value
Translation missing: en.product.metafields.processing_label: Translation missing: en.product.metafields.processing_value
Translation missing: en.product.metafields.shipping_method_label: Translation missing: en.product.metafields.shipping_method_value
Translation missing: en.product.metafields.eta_label: Translation missing: en.product.metafields.eta_value
Translation missing: en.product.metafields.packaging_label: Translation missing: en.product.metafields.packaging_value

View full details