700C Carbon Gravel Road Rim 45mm Asymmetric 24mm Inner Wide

Q: How do I set up this rim tubeless?

Use tubeless tape (e.g., 25mm wide) and a tubeless valve (6.5mm). Ensure the rim bed is clean and dry. Mount a tubeless tire, seat it with a compressor or high-volume pump, and add sealant (about 60ml per tire). The rim is designed for tubeless and has a bead lock for secure seating.

Q: What tire sizes are compatible?

The 24-25mm internal width supports tires from about 33mm to 50mm wide. For gravel, 40-45mm tires are ideal; for road, 28-35mm. Always check the tire manufacturer's recommended width range for your internal rim width.

Q: How much weight can I save by using this rim?

Compared to a typical alloy rim of similar depth, this carbon rim saves around 300-400g per wheel. The rim weighs between 360g and 435g depending on width and drilling, whereas a comparable alloy rim often exceeds 700g.

Q: Can I build this rim with any hub?

Yes, it's a standard 700C rim with a 622mm bead seat diameter. It's compatible with most hubs and spokes. Ensure you use the correct spoke length based on your hub and lacing pattern. The rim is drilled for either 20, 24, 28, or 32 holes, depending on the option.

Q: How do I maintain this carbon rim and avoid damage?

Regularly inspect for cracks, delamination, or impact damage, especially after hard rides. Clean with mild soap and water, avoid harsh chemicals. When mounting tires, use tire levers carefully to avoid damaging the bead. Over time, check spoke tension and true the wheel as needed.

$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

Spoke QTY 20/20 24/24 Customs

Weight Standard Superlight Ultralight Extremelight

The Bola 700C 45mm asymmetric gravel/road disc rim - a 45mm mid-depth, 30mm-wide tubeless rim with 24-25mm internal width, built for disc-brake gravel, all-road and cyclocross.

Built for the disc-brake builder who wants one rim to answer for gravel grinders, all-road days and cyclocross mud alike.

Buying Guide.

Weight tier - light ~360g (Ultralight): for fast gravel racing and climbing, prioritising acceleration over impact margin.

Weight tier - upper ~435g (Light): for gravel-heavy abuse and heavier riders, trading a little weight for toughness.

Internal width - 24mm hooked: 28-40c at ~50-75 PSI for endurance road and fast gravel.

Internal width - 25mm hookless: 38-50c at ~30-45 PSI for rough gravel and cyclocross mud.

Same-depth series: the 45mm tubular rim ($310) is a road-race glued-tyre option; the 45mm 34/28mm rim ($310) runs a much wider modern bed.

Adjacent depth: the 30mm gravel/CX rim ($310) is lighter and calmer in gusts; the 50mm 30mm rim ($310) adds flat aero.

Disc builds only; respect the system weight limit.

Target Audience & Usage Notes.

DIY wheel builders, mechanics, gravel racers and anyone replacing a damaged rim.

This is a single rim (hubs, spokes, nipples sold separately).

Disc-brake gravel/CX road frames; 142x12 or 135x9 spacing via hub choice.

Max 110kg system weight.

Not for heavy off-road/MTB use.

The Ride That Awaits.

Point it down a gravel track and the offset build settles into a confident line, the wide bed floating over washboard at low pressure.

You feel connected to every stone yet insulated from the worst of them, carving faster than the terrain should allow.

Free shipping and a 3-year rim warranty have your back from first dust to last.

Specifications

Material: Carbon fiber
Rim depth: 45mm
External width: 30mm
Internal width: 24-25mm
Size: 700c
Profile: Asymmetric
Weight Tier: Lightweight (360-435g)
Max Tire Pressure: 90

Trade-offs & Considerations

Aero vs Climbing: 45mm depth provides good aerodynamic efficiency on flats but adds weight (~380g) compared to shallower rims, making steep climbs slightly less effortless.
Stiffness vs Compliance: Asymmetric carbon layup offers high lateral stiffness (≥8N/mm) for power transfer, but this can transmit road buzz; however, the wide 24-25mm internal width allows running lower tire pressures (e.g., 30-40 psi on 40c tires) to improve compliance.
Tire Volume vs Speed: The 24-25mm internal width supports tires from 33-50c, maximizing volume and traction for gravel, but wider tires increase rolling resistance and reduce aero efficiency compared to 28c road tires.
Price vs Grade: At ~$310, it offers a mid-range price with performance comparable to higher-priced rims, though the carbon grade (unidirectional + woven) and warranty (3 years) reflect a balance of cost and durability.

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: 110

Recommended Use Cases

Climbing / Hill Repeats: Good
Gran Fondo / Endurance: Excellent
Road Racing: Excellent
Sprinting / Criterium: Good
Training / Daily Riding: Excellent
Not Recommended For: Not recommended for heavy off-road use or extreme mountain biking

Compatibility

Frame Compatibility: 700C road, gravel, cyclocross bikes with disc brakes and 142x12mm or 135x9mm spacing (for QR, but typically for thru-axle)
Tire Type: Tubeless-ready, clincher (with tube), and tubeless
Tire Width Range: 27-42mm
Brake Standard: Disc brake only (center-lock or 6-bolt rotor compatible)
Drivetrain: Compatible with any drivetrain (Shimano, SRAM, Campagnolo) provided you choose the correct freehub for your wheelset; this is a rim, so no drivetrain interference
Rotor Standard: Center-lock or 6-bolt disc brake rotor

How It Compares

Model	Hub	Spoke	Bearing	Weight	Depth	Width	Price
45mm Gravel/Road Rim	_	_	_	360g	45mm	24-25mm	see store
Aero 45	_	_	_	380g	45mm	24mm	~$300
Gravel 45	_	_	_	390g	45mm	25mm	~$280
Road 45	_	_	_	400g	45mm	24-25mm	~$320

FAQ

How do I set up this rim tubeless?

Use tubeless tape (e.g., 25mm wide) and a tubeless valve (6.5mm). Ensure the rim bed is clean and dry. Mount a tubeless tire, seat it with a compressor or high-volume pump, and add sealant (about 60ml per tire). The rim is designed for tubeless and has a bead lock for secure seating.

What tire sizes are compatible?

The 24-25mm internal width supports tires from about 33mm to 50mm wide. For gravel, 40-45mm tires are ideal; for road, 28-35mm. Always check the tire manufacturer's recommended width range for your internal rim width.

How much weight can I save by using this rim?

Compared to a typical alloy rim of similar depth, this carbon rim saves around 300-400g per wheel. The rim weighs between 360g and 435g depending on width and drilling, whereas a comparable alloy rim often exceeds 700g.

Can I build this rim with any hub?

Yes, it's a standard 700C rim with a 622mm bead seat diameter. It's compatible with most hubs and spokes. Ensure you use the correct spoke length based on your hub and lacing pattern. The rim is drilled for either 20, 24, 28, or 32 holes, depending on the option.

How do I maintain this carbon rim and avoid damage?

Regularly inspect for cracks, delamination, or impact damage, especially after hard rides. Clean with mild soap and water, avoid harsh chemicals. When mounting tires, use tire levers carefully to avoid damaging the bead. Over time, check spoke tension and true the wheel as needed.

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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