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Fatback Bikes Big Su 80mm rim

Big Su 80mm rim

We produced the first tubeless fat rims (the legendary Uma II) in 2009, and have been on a quest to produce a lighter rim with easier tubeless capabilities ever since. Most rim companies take what they know of 26” rims and increase the width.

In the fat bike world, this doesn’t work well, as our psi is much lower.
Utilizing years of experience, we carefully shaped the rim profile to allow both ease of tire installation, and inflation, no simple feat.
At 640g, the Big Su is almost as light as many of the carbon rims on the market, and much less expensive. The combination of weight and durability are best in class. nothing builds up lighter with the same strength or ease of use.

The numbers:

  • 26"(for now)
  • 81mm external width
  • 76mm internal width
  • 32 hole
  • 640 grams (lighter than a lot of Carbon rims on the market)
  • $175 each
  • 10 meter roll of tubeless tape and valves are included with 1-2 rims. 
  • ERD - 551
  • Max PSI 22 PSI/1.5 bar 

Use these rims to build your custom wheelset or buy a complete wheelset ready to roll today! 

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$175.00

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In the fat bike world, this doesn’t work well, as our psi is much lower.
Utilizing years of experience, we carefully shaped the rim profile to allow both ease of tire installation, and inflation, no simple feat.
At 640g, the Big Su is almost as light as many of the carbon rims on the market, and much less expensive. The combination of weight and durability are best in class. nothing builds up lighter with the same strength or ease of use.

The numbers:

  • 26"(for now)
  • 81mm external width
  • 76mm internal width
  • 32 hole
  • 640 grams (lighter than a lot of Carbon rims on the market)
  • $175 each
  • 10 meter roll of tubeless tape and valves are included with 1-2 rims. 
  • ERD - 551
  • Max PSI 22 PSI/1.5 bar 

Use these rims to build your custom wheelset or buy a complete wheelset ready to roll today! 

0 stars based on 0 reviews
Fatback Bikes Big Su 80mm rim
Fatback Bikes Big Su 80mm rim