ProX Symmetric Carbon MTB Rims 29 Carbon Rims Tubeless Ready

• Symmetric design mtb carbon rims 29er

• Tubeless ready

• 36mm width for All Mountain/Enduro

• Toray T700 carbon fiber

• High quality, 2-year warranty

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For MTB carbon rims, strength should be top priority which is essential for riders’ safety and good cycling experience.

PRD29 (ProX Symmetric Design mtb 29er) carbon rims are made from Toray T700 carbon fiber which is the basis to make high strength mtb carbon rims.

In addition, we optimize rim lay-up design, eliminate excessive materials to save weight, and add extra materials around spoke hole area for reinforcement.

Thus, our MTB carbon rims are super strong, but still light weight.

PRD29 mtb carbon rims currently only have 36mm width available, with All Mountain (-AM) and Enduro (-EN) version optional.

For 29 inch carbon mtb rims, we actually have more options for asymmetric rims. Please click the link to see more details of our asymmetric carbon mtb rims.


ProX Symmetric Design 29er MTB Carbon Rims (Tubeless Ready)

Model  PRD936-AM PRD936-EN
Terrian(Recommended) All Mountain AM/Enduro
Material T700 T700
Weight(±15g) 435g 460g
Width 36mm 36mm
Rim Offset  0mm 0mm
ERD* 583mm 583mm
Tire Bead Hookless Hookless
Tire Type Tubeless or Clincher Tubeless or Clincher
Max Weight Limit 120kg/266lb 120kg/267lb
Max Spoke Tension 145kgf  145kgf 
Max Tire Pressure 35psi/2.4bar 35psi/2.4bar
Tire Size(Recommended) 29*2.2''-2.6'' 29*2.2''-2.6''
Sectional Drawing 29 inch mtb carbon rim drawing
29 inch mtb carbon rim drawing

calculate the ERD of carbon MTB rims


Effective Rim Diameter (ERD) is the maximum distance that spokes need to bridge going from one end of the rim to another. How do we calculate the ERD of our rims? The corresponding equation and a drawing is as shown:

ERD=OD-(rim depth)*2+(rim thickness)*2

For example

ERD of PRD936-AM rim=633mm-28mm*2+3mm*2=583mm

Most people prefer ERD including the length of the nipple cap. However, customers may use different nipples and components for building. Please add the height of the nipple cap(2.5mm~3mm generally) for your spoke calculation. If the height of the nipple cap is 3mm, then ERD of your PRD936-AM rim is 583mm+3mm*2=589mm

A: Rim nipple bed thickness (=3mm)

B: Length of nipple cap (2.5mm~3mm generally)

Carbon Fiber Material

Carbon Fiber Material

Premium Toray T700 + T800 carbon fiber are used in our carbon rims. 

Combining with stable resin system to make consistent quality and light weight mountain bike carbon rims.

Light Weight

Light Weight

Well designed lay-up structure, combining Toray T700 with Toray T800 carbon prepreg to make light weight mtb carbon rims.

Excessive materials are eliminated to save weight, while extra materials are added around spoke hole for reinforcement.

So, light weight is achieved without compromise in strength or stiffness.

Hookless Design

Hookless Design

Compared to bead hook rims, the sidewalls of hookless rims are thicker and stronger, providing better impact resistance.

Straight bead provides more stance for tire. Tires will not be squeezed in bead as it was, which makes it less "light bulb effect".

Thus, the tire/rim engagement is more stable, more difficult to be blown out under strong impact, which is important for carbon mtb rims.

Tubeless Ready

Tubeless Ready

Tubeless tire has been the mainstream of mtb carbon wheels thanks to its better traction, lower rolling resistance and better riding comfort.

All our carbon clincher rims are tubeless ready (also fit normal tube tires).

Optimized anti-burp bump design provides easy tire mounting, dismounting, as well as air inflation. 

2-Year Warranty

2-Year Warranty

We have strict production management system, QC and Testing process. Our quality is always very good and reliable.

For all carbon rims and carbon wheels sold by ProX, 2 years’ quality warranty is offered (starting from the date of package being signed).

Click Warranty Policy to see more details in another page.

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