[Unicorn] 36" Carbon Fiber Rim for Bicycle or Unicycle 42mm 580g

  • Unit Price: 360 USD

  • Unit Price: 300 USD

  • Price in reward points: 30000
  • [Unicorn] 36" Carbon Fiber Rim for Bicycle or Unicycle 42mm 580g


In May 2021, we developed and produced the world's largest carbon fiber bicycle rim —— Unicorn 36". in response to the needs of some cycling enthusiasts who pursue the extreme size wheels. For us, developing a 36 inch carbon fiber bicycle rim is a new and bold attempt. The purpose to develop the large size wheels of Unicorn 36" is not to promote, but to provide product support for the cycling enthusiasts who would like to try new cycling platform. Lighter carbon fiber wheels would greatly improve the riding experience on large size bicycles.

The weight of model NXT36XU42 is 580g. The profile drawing of this rim is as below. 

Mountain Bicycle Carbon Rim Profile Drawing 36 inch Unicycle

This rim could be used for Trail, Enduro and Freeride riding. The tire size for this model of rim is recommended at 2.2" ~ 3.2". The tire pressure is recommended at 30 ~ 60 psi.

Some riders may ask, compared with the current mainstream wheel sizes 26", 27.5" and 29", what is the significance of the existence of these larger-sized wheels? What are the advantages and potential of them? Travis Brown presented his oppions.

Around three years ago, PinkBike once interviewed Trek's Travis Brown, the topic was to study the advantages and disadvantages of 32-inch and 36-inch wheels, and the meaning of existence. Back then there were no carbon fiber 32" and 36" bike rims. Travis customized a large-sized bicycle for testing, using aluminum alloy wheels, researched and tested the different experiences and feelings that large size wheels bring to riding.

After the riding test, Travis elaborated on the different riding experience brought by the larger size. He said that compared with the mainstream 29-inch bicycles, larger-sized wheels can bring higher speed, but because the inertia is relatively large, harder to accelerate. Inertia also has a positive side, it's easier to carry speed through rough terrain than with a smaller wheel because of the characteristic of the contact patch being longer, you're engaging more knobs. So, both climbing and braking traction are better and cornering traction is better. 

Here is a link to the interview details: interview-treks-travis-brown-on-experimenting-with-32-and-36-wheels

What's in the Box

Carbon Rim(s)


Learn more

The Unicorn 36" Rim and Its Tire Fitted

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: NXT36XU42
  • Rim Type: Clincher (Hooked or Hookless)
  • Materials: Toray T700+T800 Carbon Fiber (Premium Edition)
  • Tubeless Compatible: Yes
  • Drillings: 28, 32, 36
  • Warranty: 3 Years
  • Release Time: May 2021


  • Size: 36" / 36 inch
  • BSD (Bead Seated Diameter): 787mm
  • ERD (Effective Rim Diameter): 742mm
  • External Width: 42mm
  • Internal Width: 35mm / 34mm
  • Rim Height: 32mm
  • Weight: 580g (2023 Upgrade)
  • Valve Hole Diameter: 6.5mm (Presta)
  • Spoke Holes Diameter: 4.5mm
  • Spoke Holes Angle: ± 6°
  • Assembly Hole Diameter: 7.5mm


  • Spoke Tension: 80~130kgf
  • Tire Size: 2.2" ~ 3.2"
  • 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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