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  • 700c Asymmetric 30mm Carbon Gravel Rim 30mm Wide – Superlight & Ultralight | Bola Bola
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700c 30mm Carbon Gravel Rim — Tubeless-Ready | Bola

700c 30mm Carbon Gravel Rim — Tubeless-Ready | Bola

$310.00 USD
$350.00 USD $310.00 USD
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Spoke QTY
Weight

The Bola 700c asymmetric V carbon gravel rim — a 30mm-deep, 30mm-wide hoop (335-405g) in Toray T700/T800 carbon for gravel and all-road.

For the long gravel day, comfort and support matter more than raw speed. A 30mm external width gives real sidewall support to wide gravel tires, while a 2.6mm asymmetric offset balances spoke tension.

Buying Guide.

Weight tier - Ultralight ~335g: the climb-oriented build for lighter riders around ~80kg - fast on loaded gravel climbs.

Weight tier - Superlight ~365g: the all-rounder for riders up to ~95kg - race and ride without the thinnest margin.

Weight tier - Normal ~405g: the load-carrying build for riders up to ~105-120kg - choose it for bikepacking and rough roads where durability wins.

Internal width - 24 or 25mm: choose the narrower for a snappier race tire, the wider for a voluminous low-pressure gravel tire on rough tracks.

Same-family: this is the shallower comfort rim in Bola's gravel line; the 40mm gravel rim ($310) adds aero for fast gravel sectors.

Rated to a 105kg system weight.

Target Audience & Usage Notes.

Gravel racing, bikepacking, gran fondo and all-road.

Max system weight 105kg; not pure road racing or MTB.

Disc only.

The Ride That Awaits.

Load the bike for a long gravel day and feel the rim soak up the chatter - wide tires, low pressure, a wheel that carries your kit without complaint. It rolls into rough tracks with composure, absorbing stones that would rattle a narrow rim. Choose a layup to match your load and let the 3-year rim warranty carry the risk.

Specifications
  • Material: Toray UD carbon
  • Rim depth: 30mm
  • External width: 30mm
  • Internal width: 24/25mm
  • Size: 700c (ISO 622)
  • Profile: Asymmetric V-shape
  • Weight Tier: Normal 405g, Superlight 365g, Ultralight 335g
  • Max Tire Pressure: 90
Trade-offs & Considerations
  • Weight vs Durability: Choose from 405g (Normal), 365g (Superlight), or 335g (Ultralight) per rim. Lower weight reduces rotating mass for climbing but decreases load capacity and durability; Normal tier supports up to 120kg rider weight, Ultralight only 80kg.
  • Tire Volume vs Speed: 30mm outer width supports 32-54mm tires for comfort and traction on gravel, but the wider profile increases drag compared to narrower aero rims. The 30mm depth favors stability over pure aero efficiency.
  • Stiffness vs Compliance: The asymmetric 2.6mm offset and Toray T700/T800 construction provide lateral stiffness for precise handling, while the wide rim bed and tubeless setup allow lower pressures for compliance. However, stiffness is not as high as deeper-section rims, trading some responsiveness for ride comfort.
  • Versatility vs Specialization: This rim is designed for gravel, endurance, and all-road use, accommodating various tire widths and tubeless setups. It is not optimized for pure road racing aerodynamics or heavy-duty MTB use, making it a versatile but not fully specialized choice.
Performance Test Data
  • 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
Recommended Use Cases
  • Gravel Racing: Good choice for mixed-terrain racing with wide tire support and reliable construction.
  • Bikepacking: Good for loaded adventures; Normal tier supports up to 120kg rider weight for heavy loads.
  • Gran Fondo / Endurance: Suitable for long rides with comfort from wide tire compatibility and tubeless setup.
  • Road Racing: Not recommended; 30mm depth and wide profile lack aero efficiency for competitive road racing.
  • Training / Daily Riding: Suitable for everyday riding; durable construction and tubeless compatibility make it practical.
  • Not Recommended For: Heavy-duty MTB downhill or track use; this rim is optimized for gravel and all-road, not aggressive off-road or velodrome.
Compatibility
  • Frame Compatibility: 700c / ISO 622 compatible frames
  • Tire Type: Tubeless and clincher
  • Tire Width Range: 27-42mm
  • Brake Standard: Disc brake only
  • Drivetrain: Compatible with all drivetrains
  • Rotor Standard: N/A (rim only)
How It Compares
Model Hub Spoke Bearing Weight Depth Width Price
Bola 30 N/A N/A N/A 335-405g 30mm 24/25mm see store
G30 N/A N/A N/A 350g 30mm 30mm ~$1200
303 N/A N/A N/A 390g 30mm 30mm ~$900
Terra N/A N/A N/A 370g 30mm 30mm ~$800
FAQ

How do I set up this rim tubeless?

Use a standard 6.5mm tubeless valve and tape the rim bed with tubeless tape. The hookless bead design ensures a secure fit. Inflate the tire to seat the bead, typically requiring a compressor or high-volume pump. Recommended tire pressures range from 30-50 psi depending on rider weight and terrain, but always follow tire manufacturer guidelines.

What tire widths are compatible?

The rim supports tires from 32mm to 54mm wide. The 30mm outer width provides strong sidewall support for wider gravel and all-road tires. The inner width is available in 24mm or 25mm, allowing a good range of tire volumes. For optimal performance, consider tires around 40-50mm for gravel riding.

How much weight can I save compared to an alloy rim?

The carbon rim weighs between 335g and 405g per rim depending on tier, while a comparable alloy rim often weighs 500-600g. This saves 100-200g per rim, reducing rotating mass and improving acceleration and climbing. The specific savings depend on the alloy rim you compare against and the chosen weight tier.

Can I build this rim with any spokes or hubs?

Yes, the rim supports custom spoke drilling for straight-pull or J-bend spokes with a 4.5mm nipple seat. This allows compatibility with a wide range of hubs and lacing patterns. Ensure you use appropriate spoke lengths for your chosen hub and lacing pattern. The asymmetric 2.6mm offset improves spoke bracing angle for disc brake wheels.

How do I maintain and inspect this rim for damage?

Regularly inspect the rim for cracks, delamination, or impact damage, especially after rough rides. Check spoke tension and true the wheel as needed. Avoid overheating the rim by using rim brakes for long descents; this rim is designed for disc brakes. Clean with mild soap and water, and avoid harsh solvents. The three-year warranty covers manufacturing defects.

Warranty & Shipping
  • Warranty Period: 3 years for rims / 2 years for wheelsets
  • Warranty Coverage: Manufacturing defects on carbon structure
  • Crash Replacement: 30% discount within warranty period
  • Processing Time: 1–3 business days; 7–15 business days for custom or out-of-stock items
  • Shipping Method: FedEx / UPS / DPD Economy (free, duties & VAT included) · Expedited option at checkout (duties & VAT payable on delivery)
  • Estimated Delivery:Economy 7–20 business days · Expedited 3–7 business days, excluding customs clearance
  • Packaging: Double-wall carton with foam protection
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