ProX Fat Bike Carbon Rims 26er and 27.5er Fat Bike Rim

26er fatbike rims are with 65mm/85mm and 90mm width. The 27.5 inch/650b fartbike rim is also available and the rim width is 70mm which is perfect for 650b*3.8''-5.0'' tires.

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65mm~75mm Widths: This is the most favorite size for riders who are looking for a fat bike. They are light and make the bike goes into corners easily, and still give enough float. They can be applied to almost snow, sand and other deep terrain. With 27.5 inch/650b fatbike rim getting more and more popular in the market, the 75mm width rim is the perfect choice to save the  weight. 75mm rim can even take 5" tires without issue.

85mm~90mm Widths: Wider rims also flatten your tire out pretty significantly which means more contact with the ground to give you as much traction as possible. But it's not too wide as 100mm, so it's also considered as the good rim without hurting too much while turning a corner.


26ER and 650B Fatbike Carbon Rims (tubeless ready)

Model  PF26-65S PF26-85S PF26-90S PF27.5-75S
Size 26er 26er 26er 27.5er/650B
Terrian(Recommended) fat bike/snow bike/sand bike fat bike/snow bike/sand bike fat bike/snow bike/sand bike fat bike/snow bike/sand bike
Material T700 T700 T700 T700
Weight(±15g) 480g 620g 650g 650g
Sectional Drawing 65mm fatbike rim drawing 85mm fatbike rim drawing 90mm fatbike rim drawing 75mm fatbike rim drawing
Width 65mm 85mm 90mm 75mm
ERD 547mm 543mm 498mm 568mm
Tire Bead Hookless Hookless Hook Hookless
Tire Type Tubeless or Clincher Tubeless or Clincher Tubeless or Clincher Tubeless or Clincher
Max Weight Limit 120kg/265lb 120kg/265lb 120kg/265lb 120kg/265lb
Max Spoke Tension 135kgf  135kgf  135kgf  135kgf 
Max Tire Pressure 25psi/1.7bar 25psi/1.7bar 25psi/1.7bar 25psi/1.7bar
Tire Size(Recommended) 26*3.5''-4.9'' 26*4.0''-4.9'' 26*4.0''-4.9'' 650b*3.8''-4.9''

Carbon Fiber Material

Carbon Fiber Material

Premium Toray T700 carbon fiber is used in our carbon bike rims. 

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

Double Wall Structure

Double Wall Structure

All our carbon fat bike rims are designed with double wall structure.

Considering fatbike rims are much wider than regular rims, double wall is necessary to guarantee the strength and 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.

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

Tubeless Ready

Tubeless Ready

Tubeless tire is widely used in carbon fat bike wheels thanks to its better traction, lower rolling resistance and better riding comfort.

All our fatbike 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).

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