[RX] Classic Road Carbon Rim 70mm

  • Unit Price: 260 USD

  • [RX] Classic Road Carbon Rim 70mm


The RX road bike rims are a series of road rims with classic internal width 18mm. They are premium edition and made of the materials of Toray T700+T800 carbon fibers. They are aerodynamic optimized design, could efficiently break the wind, so they could be ride very fast.

Quality is what we have always guaranteed. Rigidity and deflection control are the most important factors in measuring the quality of a road bike rim. Because of the use of better carbon fiber materials, Toray T700+T800, and the latest manufacturing technologies, we are able to control the rigidity and deflection of premium edition road carbon rims within 0.2mm. This is a very high accuracy.

The weight of NXT70RX is only 530g. The profile drawing is as below. 

profile drawing of classic carbon fiber bicycle rim

The tire size for this model of rim is recommended at 22 ~ 45mm. The tire pressure is recommended at 85 ~ 120psi. 

Aerodynamic Optimized Design

Nowadays, aerodynamic performance is one of the key factors considered when racing cyclists purchase new equipment, as the aerodynamic drag is known to be the main source of losses in cycling. The aerodynamic optimization of bicycle wheels can lead to decisive gains in running pace. For all of our RX carbon rims, they have an optimized cross section. Please also note that choosing an appropriately sized tire for an aerodynamically optimized rim is also crucial to reducing air resistance and increasing riding speed.

Tubeless-Compatible Design

Lower rolling resistance. By eliminating the inner-tube, the friction between tire and tube is also eliminated, allowing the tire roll, flex, and conform to the road with greater efficiency.

Flat less, ride more. Flat tires are a buzz-kill. With a little sealant you can eliminate nearly all flats that would have been caused by an intrusive thorn or piece of debris.

Run the Best Pressure. Tubeless means you can run the pressure you want to maximize comfort, traction, and rolling efficiency. Visit our tire pressure page to dial in your best tire pressure.

Textured Brake Track

Textured Brake Track of Road Bike Carbon Rims V-Brake

What's in the Box

Carbon Rim(s)


Learn more

What is the difference between weaves UD, 3K and 12K?

What is Free Coating Manufacturing (FCM) process?

What is the Difference between Ultralight, Premium and Standard Edition?

What is ERD (Effective Rim Diameter)?

How much spoke tension should I use?


  • Code: NXT70RX
  • Rim Type: Road Bike (Clincher, Tubeless compatible)
  • Materials: Toray T800+T700 Premium Carbon fiber
  • Drillings: 16, 18, 20, 24, 28, 32, 36
  • Warranty: 3 Years


  • Size: 700C
  • ERD (Effective Rim Diameter): 501mm
  • External Width: 25mm
  • Rim Height: 70mm
  • Weight: 530g
  • Valve Hole Diameter: 6.5mm (Presta)
  • Spoke Holes Diameter: 4.5mm / 2.3mm
  • Assembly Hole Diameter: 7.5mm


  • Spoke Tension: 80~130kgf
  • Tire Size: 22mm~45mm
  • Spoke Nipple Length: 12mm / 14mm
  • Tire Pressure: 85 ~ 120psi
  • Load Limit (One Wheel): 120kg


  • Weave: UD / 3K
  • Finish: Matte / Glossy


  • application: Road / Triathlon / TT / Cyclocross

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