# 700c 34mm Wide Carbon Rim — 45mm or 50mm Profile, Disc Brake, 24H, 385–460g

Take your road, gravel, or endurance bike build further with a wide-profile carbon rim designed to balance low weight, predictable handling, and tubeless compatibility. Choose between a 45mm or 50mm aerodynamic profile and four weight grades so you can prioritize climbing agility, flat-course speed, or a softer structural margin for rougher terrain. These rims are purpose-built for 700c disc-brake wheelsets used in mixed-surface racing and long rides.

## 700c 34mm Wide Carbon Rim - Designed for road, gravel, and endurance builds

Riding on these rims delivers a composed, confidence-inspiring feel thanks to a 34mm external width that supports wider tires and a 25mm internal channel that stabilizes the casing. The UV Wave hooked profile and disc-brake-only bed eliminate rim brake wear and create a consistent bead seat for tubeless setups, reducing pinch-flat risk and improving ride compliance on rough gravel or broken pavement.

### Why it fits your routine

-   **Versatile depth choices:** 45mm depth (34mm external width) prioritizes crosswind stability and precise handling for mixed-terrain and climbing stages; 50mm depth (31mm external width) provides improved aerodynamic efficiency for flat and rolling courses.
-   **Wide internal channel:** 25mm internal width accepts 28–50mm tires, covering tubeless road sizes (28–32mm), gravel (35–45mm), and light all-road setups for everyday training or long rides.
-   **Selectable weight grades:** Standard 460g, Superlight 425g, Ultralight 405g, and Extreme Light 385g let builders tune rotational mass and structural margin to rider weight and course demands.
-   **Disc brake specific:** The rim bed removes braking surface concerns and the UV Wave bead seat supports tubeless installation without rim tape when paired with compatible valves and sealant.
-   **Durability targets:** Structural ratings include forward compressive strength >300 kg, lateral torsion resistance >50 kg, and spoke hole tension >280 kg to meet the demands of road and gravel use.
-   **Precision manufacturing:** ERD 539mm, flatness <0.15mm, roundness <0.3mm, and dynamic balance <3g for consistent wheelbuilding outcomes.
-   **Spoke configuration:** 24-hole rim designed for balanced tension builds suitable for performance-oriented wheelsets.
-   **Tire pressure and rider limits:** Recommended tire pressure range 100–125 psi and maximum rider weight 120 kg, with lower weight grades advised for riders under 75 kg on road-only surfaces.
-   **Customizable details:** Standard valve hole 6.5mm, spoke hole 4.5mm, assembly hole 7.5mm, and nipple angles Front 7° / Rear 5° & 7° are all customizable; logo, decal, and color options available for OEM or team orders.

Weight differences are meaningful: swapping Standard (460g) to Extreme Light (385g) saves 75g per rim or about 150g per wheelset, a measurable reduction for climbing and acceleration while the lighter layups use more aggressive fiber schedules and tighter structural margins. For riders above 100 kg or for sustained rough gravel events, Standard or Superlight grades provide additional structural margin. The rim supports tubeless and clincher setups, fits ISO 622 (700c) tires, and is engineered to give builders consistent ERD and spoke-hole specifications for reliable, serviceable wheel builds.

## Details

- **Price:** 310.0 USD - 340.0 USD
- **Type:** Carbon Bicycle Rim
- **Tags:** 24 spoke rim, 34mm wide, 34mm wide rim, 700c, 700c carbon rim, 700c rim, carbon disc brake rim, carbon road rim, disc brake rim, endurance cycling rim, gravel bike rim, high performance bike rim, lightweight bike rim, lightweight carbon rim, rims, road and gravel rim, tubeless compatible rim, wide carbon rim

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| UD Matt / Standard | 310.00 USD | In stock |
| UD Matt / Superlight | 320.00 USD | In stock |
| UD Matt / Ultralight | 330.00 USD | In stock |
| UD Matt / Extremelight | 340.00 USD | In stock |
| UD Glossy / Standard | 310.00 USD | In stock |
| UD Glossy / Superlight | 320.00 USD | In stock |
| UD Glossy / Ultralight | 330.00 USD | In stock |
| UD Glossy / Extremelight | 340.00 USD | In stock |
| Marble Matt / Standard | 310.00 USD | In stock |
| Marble Matt / Superlight | 320.00 USD | In stock |
| Marble Matt / Ultralight | 330.00 USD | In stock |
| Marble Matt / Extremelight | 340.00 USD | In stock |
| Marble Glossy / Standard | 310.00 USD | In stock |
| Marble Glossy / Superlight | 320.00 USD | In stock |
| Marble Glossy / Ultralight | 330.00 USD | In stock |
| Marble Glossy / Extremelight | 340.00 USD | In stock |

## Images

- 700c 34mm wide carbon gravel bike rim set with UCI logo and Bola branding, designed for disc brakes, 24H, 370–440g.
- Bola 700c carbon gravel rim – UV wave profile cross-section showing 34mm external width
- 700c 34mm Wide Carbon Road & Gravel Rim diagram showing dimensions and specifications for 45mm & 50mm wavy profile, disc brak
- Bola 700c 45mm Carbon Road Rim – 34mm Outer, 28mm Inner, Tubeless Ready
- Bola 700c 45mm Carbon Road Rim – 34mm Outer, 28mm Inner, Tubeless Ready
- 700c 34mm Wide Carbon Road & Gravel Rim | 45mm& 50mm Wavy profile| Disc Brake | 24 Spoke | 385–460g Carbon Fiber Sporting Goods
- 700c 34mm Wide Carbon Road & Gravel Rim | 45mm& 50mm Wavy profile| Disc Brake | 24 Spoke | 385–460g Carbon Fiber Sporting Goods

## Additional Information

- **AI Summary:** The 700c 34mm Carbon Disc Brake Rim is a high-modulus carbon fiber rim for riders and wheel builders assembling tubeless-ready road, gravel, and endurance wheelsets. Its 25 mm internal width supports 28 mm to 50 mm tires, while four rim-weight grades let builders select an appropriate balance of weight and structural margin.

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> Source: [Bola Carbon Wheelset ](https://bolacarbon.com/products/700c-34mm-carbon-disc-rim-45mm-50mm)
> Updated: 2026-08-03