These replacement crank arm sets are designed to fit the All Terrain R750 Series and Sport Series bikes.
The Prowheel 170mm 36T square taper crank arm feature a plastic chainring and are a great budget crank arm option. These were the OEM parts for 2016-2018 era All Terrain R750 Series bikes.
The Prowheel Zephyr 170mm 38T square taper crank arm set features a full metal design with metal chain guides for improved durability when riding off road.
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.