These replacement crank arm set fit the All Terrain R750 / Kush / MD fat bikes, as well as the Dual Sport R500 and XC Sport R500. They are Prowheel 170mm square taper crank arm with 36t chainring.
Installation is easy with a crank arm puller tool. If you do not have one, we offer one for loan through our shop that can be purchased. We will refund the purchase price of the tool upon return.