ICAN offer single chainring 30T  crankset. 172.5mm and 175mm arm length.

Fat Bike Single Chainring Crankset 30T
Fat Bike Single Chainring Crankset 30T
$ 168.00 USD
    Fat Bike Crankset/Bottom Brackets Set Crankset Weight:940 grams Bottom Bracket Weight: 136 grams Material: Aluminum Alloy Bottom Bracket...
    Fat Bike Single Chainring Crankset 30T
    Fat Bike Single Chainring Crankset 30T
    $ 168.00 USD
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