700c Carbon Tubeless Rim 50mm | 30mm Wide | Ultralight 375–470g | Road Bike

Explore the High-Performance 700c Carbon Tubeless Rim for Road Bikes

This 700c carbon tubeless rim delivers a verified weight range of 375g–470g per rim (four weight tiers available) across a 50mm aerodynamic profile and 30mm outer / 24–25mm inner width. Designed for road and gravel builds prioritising climbing efficiency, tubeless compatibility, and lateral stiffness.

Technical Specifications

Weight Tier Guide — Which Option Is Right for Your Build?

• Normal (470g): Recommended for all-day training and heavier riders up to 120 kg. Higher spoke tension tolerance provides long-term durability.
• Superlight (430g): Balanced option for race-training hybrids where longevity and weight savings are both priorities.
• Ultralight (400g): Suited to competitive road events and climbers targeting sub-1,400g wheelset builds. Note: reduced layup thickness versus Normal tier — inspect regularly under hard training loads.
• Extreme Light (375g): Race-day performance tier. Best for riders under 75 kg on smooth road surfaces. Not recommended for prolonged training use or rough tarmac.

30mm Wide Rim — Tubeless Compatibility

A 30mm outer / 24–25mm inner width accommodates tubeless tyres from 25c to 32c, optimising the tyre profile for improved contact patch and cornering grip compared to narrower 19–21mm internal rims. The hookless-compatible bead seat design supports modern tubeless-ready (TLR) tyres at pressures up to 125 psi.

Known Tradeoffs

The 50mm rim height provides measurable aerodynamic advantage at speeds above 35 km/h, but adds approximately 80–120g per rim versus a 35mm equivalent — a relevant consideration for technical climbing stages where rotating mass outweighs aero gain. Riders targeting pure climbing builds may prefer a 35mm profile; this 50mm rim is best suited to flat-to-rolling terrain and criterium racing.

Frequently Asked Questions

What is the best carbon tubeless rim for lightweight road cycling builds?

For a lightweight road build, the Ultralight (400g) or Extreme Light (375g) tiers of this rim pair well with 25c or 28c tubeless tyres. The 30mm outer width is wide enough to optimise tyre profile without adding unnecessary rim mass.

How much does rim weight affect climbing performance?

Rotating mass has approximately 1.5–2× the effect of static frame weight on climbing acceleration. Reducing each rim by 70g (Normal to Ultralight) saves roughly 140g of rotating mass per wheelset — measurable on sustained climbs above 6% gradient.

What is the difference between 50mm and 60mm carbon rims for training?

50mm rims offer a better crosswind stability-to-aero balance for everyday training, particularly in variable wind conditions. 60mm rims deliver greater straight-line aero efficiency but are more sensitive to crosswinds above ~30 km/h gusts.

Are 30mm wide carbon rims better than 25mm for tubeless tyre grip?

Yes, for tyres 25c and wider. A 30mm outer rim allows the tyre to assume a more rounded profile, improving the contact patch shape and reducing rolling resistance by approximately 3–5 watts at 40 km/h versus a 23mm internal rim (based on published tyre manufacturer data).

What should I look for when buying ultralight carbon rims under 400g?

Verify spoke hole tension rating (this rim: >280 kg), forward compressive strength (>300 kg), and flatness tolerance (<0.15mm). Confirm the weight tier is a per-rim figure, not per-pair, and check the maximum rider weight rating (this rim: 120 kg).

Advanced Design and Specifications

The 700c carbon tubeless rim is engineered for road bike riders who demand speed and reliability. Featuring a 50mm rim depth combined with a 30mm internal width, this rim optimizes aerodynamic efficiency and tire stability. Its ultralight weight ranges between 375g and 470g, making it easy to accelerate and maneuver on various road conditions. The tubeless design also enhances puncture resistance and rolling efficiency, providing riders with a smoother and faster ride. This rim's carbon construction ensures high strength while keeping the weight minimal, suitable for competitive and casual cyclists alike.

Benefits of Tubeless Technology

Utilizing tubeless compatibility, the 700c carbon tubeless rim allows riders to run lower tire pressures without risking pinch flats. This translates into improved traction and comfort on rough roads or during aggressive cornering. The tubeless setup reduces rolling resistance because there’s no inner tube to create friction. Additionally, it improves ride durability by minimizing puncture risks common with traditional tubes. For road cyclists prioritizing performance and reliability, this rim balances advanced technology with practical benefits, offering a superior riding experience that enhances endurance and speed.

Why Choose This Carbon Rim for Your Road Bike?

Choosing this 700c carbon tubeless rim means investing in cutting-edge materials and design tailored for road cycling excellence. Its balance of aerodynamics and lightweight durability improves energy transfer efficiency, helping riders maintain higher speeds with less effort. The 30mm width accommodates wider tires, which enhances traction and comfort, ideal for long rides or variable surfaces. Furthermore, the rim’s robust carbon fiber construction stands up to the demands of spirited riding without compromising reliability. Whether upgrading your current setup or building a high-performance wheelset, this rim delivers a premium cycling experience.