700c Carbon Road Bike Rim 50mm Deep 36mm Wide – Superlight to Extreme Light Options (395–490g)

700c Carbon Road Bike Rim – 50mm Deep, 36mm Outer / 30mm Inner Width

This 700c carbon fiber road rim combines a 50mm aerodynamic profile with a wide 36mm outer and 30mm inner diameter, making it compatible with modern road tires from 25c to 32c. Available in four weight tiers — Normal (490g), Superlight (450g), Ultralight (410g), and Extreme Light (395g) — the rim lets builders match weight targets to budget and use case.

Tradeoff note: Lighter tiers (Ultralight and Extreme Light) reduce rotating mass but carry tighter manufacturing tolerances. Flatness is held to <0.15mm and roundness to <0.3mm across all variants, so structural integrity is not compromised at lower weights.

Technical Specifications

Weight Tier Comparison: Which Should You Choose?

• Normal (490g): Best for training wheels, heavy riders up to 120kg, or builds prioritizing durability over gram count.
• Superlight (450g): A balanced choice for riders who train and race on the same wheelset. Saves ~80g per pair versus Normal.
• Ultralight (410g): Suited to racing builds and climbers under 80kg seeking maximum rotating mass reduction.
• Extreme Light (395g): Targeted at competitive race use. At 395g, each rim is approximately 95g lighter per pair than the Normal variant — a meaningful difference for climbing or sprint courses.

Compatibility

• Tire width: 30mm inner width is optimized for 28c–32c road tires; compatible with 25c at the narrower end of the recommended range.
• Valve type: 6.5mm valve hole accepts standard Presta valves; extended valve stems recommended given 50mm rim depth.
• Spoke count: Custom drilling available; standard builds typically use 24h or 28h.
• Tubeless: Hookless-compatible profile supports tubeless setup with appropriate tape and valves.

Frequently Asked Questions

Is a 50mm carbon rim suitable for everyday training or only racing?

A 50mm rim offers an aerodynamic advantage at speeds above 35km/h and adds minimal crosswind penalty compared to shallower profiles. It is a practical all-round depth for riders who train and race on the same wheels, particularly in flat to rolling terrain.

What is the difference between Superlight and Ultralight carbon rims?

Superlight is 450 ± 10g; Ultralight is 410 ± 10g — a 40g difference per rim or approximately 80g per built wheel pair. Both share identical structural strength ratings (>300kg forward compressive strength, >280kg spoke hole tension). The choice depends on whether you prioritise cost efficiency (Superlight) or minimum rotating mass (Ultralight).

Are 30mm inner width rims compatible with modern road bike tires?

Yes. The 30mm inner width aligns with the current industry standard for wide road and gravel rims (ETRTO 2020+ guidelines recommend inner widths of 19–25mm for road, and up to 30mm for wider-tire applications). It is compatible with tires from 28c to 40c and improves the tire's casing shape for better rolling resistance and puncture protection.

What rider weight limit applies to these rims?

All weight variants are rated for riders up to 120kg (system weight including rider, bike, and luggage). Riders near this limit are advised to select the Normal or Superlight tier for maximum fatigue life.

Can spoke hole diameter and nipple direction be customized?

Yes. Spoke hole diameter (standard 4.5mm), valve hole diameter (standard 6.5mm), and assembly hole diameter (standard 7.5mm) can all be customized on request. Nipple direction is also configurable: 7° front; 5° or 7° rear.