[Premium] 29" Asymmetric Mountain Carbon Rim 38mm

  • Unit Price: 239 USD

  • Price in reward points: 23900
  • [Premium] 29" Asymmetric Mountain Carbon Rim 38mm


The carbon fiber bicycle industry has been innovating and advancing all the time. Being lighter and stronger has always been the pursuit of the professional bicycle industry,

In the year of 2017, we first tried to use Toray T800 carbon fiber material and to improve the production process, reducing a weight of 60g for the XC mountain rim, which is a huge improvement. In the year of 2022, we developed this model of rim NXT29XML38. The design of this model inherited from our previous generation the Wild Cat NXT29WC38 which was well known before. We decreased the rim height to 26mm. The shallower height improves the toughness of the entire wheel and makes riding more comfortable. With the newest premium layer-up system applied on this rim, the strength increased a lot. For the AM version, the positive stiffness test result gets 120J. For the Enduro version, the result gets 132J. That's superb. 

The weight of model NXT29XML38 is only 415g for AM and 445g for Enduro. The profile drawing of this rim is as below. 

Ultralight Carbon Fiber Mountain Bicycle Rim NXT29XML38

This rim could be used for AM (All Mounatin), Trail and Enduro riding. The tire size for this model of rim is recommended at 2.15" ~ 2.75". The tire pressure is recommended at 30 ~ 60 psi. 

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: NXT29XML38
  • Rim Type: Mountain Bike (Clincher, Hookless)
  • Materials: Toray T800 + T700 Carbon Fiber (Premium)
  • Tubeless Compatible: Yes
  • Drillings: 28, 32
  • Warranty: 3 Years


  • Size: 29"
  • BSD (Bead Seated Diameter): 622mm
  • ERD (Effective Rim Diameter): 589mm
  • External Width: 38mm
  • Internal Width: 32mm
  • Rim Height: 26mm
  • Weight: 415g (AM) / 445g (Enduro)
  • Valve Hole Diameter: 6.5mm (Presta)
  • Spoke Holes Diameter: 4.5mm
  • Spoke Holes Angle: ± 6°
  • Spoke Holes Offset: 2.6mm
  • Assembly Hole Diameter: 7.5mm


  • Spoke Tension: 80~130kgf
  • Tire Size: 2.15" ~ 2.75"
  • Tire Pressure: 30 ~ 60psi
  • Load Limit (One Wheel): 120kg


  • Carbon Weave Availability: UD / 3K / 12K
  • Finish: Free Coating / Matte / Glossy


  • application: Trail / AM / Enduro / Freeride

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