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32er MTB Carbon Rims

/ProX 32er MTB Carbon Rims 32inch Mountain Bike Carbon Rims Tubeless Ready

32 carbon mtb rims
32 carbon mtb rims 32 carbon mtb rims 32 carbon mtb rims 32 carbon mtb rims 32 carbon mtb rims 32 carbon mtb rims 32 carbon mtb rims 32 carbon mtb rims

ProX 32er MTB Carbon Rims 32inch Mountain Bike Carbon Rims Tubeless Ready

• 32-inch MTB carbon rims symmetric design

• Bead Hook and Hookless optional

• Tubeless ready mtb carbon rims for XC/AM

• Light weight T700+T800+Graphene material

• High quality, 2 years warranty

  • Brand:

    PROX

  • Item NO.:

    M32-36

  • Payment:

    Paypal, Bank Transfer

  • Origin:

    China

  • Color:

    UD/3K/12K(Customized Decal Acceptable)
Inquiry now
DESCRIPTION

Why 32-Inch MTB Carbon Rims?
While 29-inch rims remain the industry standard, 32-inch carbon rim is designed to push the boundaries of MTB performance and explore the next evolution of rim size.
They are not meant to replace 29ers — they exist to offer new advantages for riders who prioritize efficiency, stability, and speed over rough terrain.

32inch mtb rim VS 29inch mtb rim

ProX M32UL carbon rims are made from premium Toray T700+T800+Graphene pre-preg to achieve super light weight, which is more suitable for lighter weight XC/AM riders (max weight limit 100kg/220lb). 

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.

For riders who plan to use tire at lower tire pressure (not exceed 40psi), hookless is a good option.
For riders who prefer higher tire pressure (max 60psi), bead hook is recommended.

32er MTB carbon rims main features

Key Advantages:
Superior Roll-Over Capability
The larger diameter reduces the attack angle when rolling over rocks and roots, resulting in smoother, faster trail performance with less rider fatigue.
Improved Efficiency
Once at speed, 32-inch wheels maintain momentum more easily, helping riders carry speed through technical sections and long climbs.
Enhanced Stability & Control
The bigger rim size provides greater stability at higher speeds, especially on rough or uneven terrain.
Better Traction
A larger tire contact patch improves grip under braking and climbing, delivering more predictable handling.

Who Are 32-Inch Rims For?
  • ✅Riders seeking maximum efficiency on rough terrain
  • ✅Taller riders who benefit from improved bike sizes
  • ✅Riders interested in next-generation MTB technology


Future Potential:

As the development of frame geometry, suspension design and tire technology, 32'' rim offers strong long-term potential as a platform for smoother, faster, and more stable riding.
The compatible frame solution (front 32''/rear 29'') is already under development to fully unlock the performance benefits of this rim size. 
32-inch carbon rim is not just a trend — it's about what’s next.
SPECIFICATION

ProX Symmetric Design 32er Mountain Bike Carbon Rims Big Diameter MTB Carbon Rims

Model M32UL-36C M32UL-36Z
Terrain (Recommended) Cross Country and All Mountain Cross Country and All Mountain
Material T700+T800+Graphene T700+T800+Graphene
Weight(±15g) 480g 480g
Outer Width 36mm 36mm
Inner Width 30mm 30mm
Spoke Holes Angle Axial 8°, Radial 8° Axial 8°, Radial 8°
Rim Offset 0mm 0mm
ERD* 647mm 647mm
BSD 686mm 686mm
Tire Bead Hook Hookless
Tire Type Tubeless or Clincher Tubeless or Clincher
Max Weight Limit 100kg/220lb 100kg/220lb
Max Spoke Tension 145kgf 145kgf
Max Tire Pressure 60psi/4.1bar 40psi/2.7bar
Tire Size(Recommended) 32*2.3''-2.8'' 32*2.3''-2.8''
Sectional Drawing hook 32inch rims MTB hookless 32inch carbon rims MTB


ERD of mountain bike rims 29 inch

ERD*

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 M32UL-36C rim=697mm-28mm*2+3mm*2=647mm

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 M32UL-36C rim is 647mm+3mm*2=653mm


A: Rim nipple bed thickness (=3mm)

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


TECHNOLOGY
Carbon Fiber Material

Carbon Fiber Material

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

Besides, advanced graphene filling technology is used in producing our ultra light MTB carbon rims. 

Combining with stable resin system to make consistent quality and light weight 32er mountain bike rims.

Light Weight

Light Weight

Graphene filling Toray T700 + T800 carbon prepreg are well combined in our lay-up structure design, to create ultra weight mountain bike 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.

Tubeless Ready

Tubeless Ready

Tubeless tire has been the mainstream of mountain bike 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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Contact Us
Xiamen ProX Carbon Technology Co., Ltd. set up factory in Xiamen City (Fujian Province, China) in 2010. At the beginning, we manufactured all kinds of customized carbon fiber products according to customers’ demand, including carbon bike rims, carbon tubes, carbon drone body shell, etc. Since 2012, we decided to focus on main products - carbon bike rims. In 2012, we built full range carbon road rims with 20.5mm width. In 2014, we built full range carbon road rims with 23mm width. In 2015, we built full range carbon road rims with 25mm width. In 2016, we introduced product line for BMX carbon rims, as well as fatbike carbon rims. In 2018, we introduced product line for MTB carbon rims (both symmetric and asymmetric design). During the same year, we set up wheel building workshop, and started to build carbon wheelset in-house. In 2019, we added 28mm width carbon road rims into our product line (both rim brake and disc brake). Besides, we created gravel carbon rims. During the same year (2019), LightCarbon (China leading carbon frame manufacturer) visited us. After several trial order for testing, they were very satisfied with our quality. Eventually, LightCarbon invested our facotry, and we build close business relationship. ProX supply carbon rims and carbon wheelset to LightCarbon, and LightCarbon supply carbon frameset and components to ProX. Since then, both ProX and LightCarbon are able to supply carbon rims, carbon wheels and carbon frameset, with same factory price. So it is convenient for customers to do one-stop purchasing. We are known and recognized by more and more brands, and have been selling our carbon rims/wheels/framesets to over 60 countries till 2023. ProX is always ready to supply you high quality carbon rims/wheels/frames, with fast delivery! Why Choose ProX? * More than 10 years’ experience in carbon rims developing and manufacturing. * More than 3,000M² plant area. * 50+ total staff, including 6 engineers, 40+ well-trained workers. * Already got 40+ utility and invention patent. * 4,000 pcs/month production capacity for carbon rims. * 1200 pairs/month production capacity for carbon wheelsets. * Our carbon rims are rigorously tested under international standard ISO4210. * Well selected hubs and spokes used to build wheelset, including DT Swiss, Powerway hubs, etc. Sapim, Pillar spokes, etc. * All wheelsets are hand built and trued by experienced mechanician. * Customized logo, painting or package is available. * We can also help to make new graphic design. * Private mould for rims and even hubs are also negotiable. * Good production management to ensure in-time delivery. * Fast response and good after-sale support.....     LEARN MORE >>  
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