The Bike Shop - Shimano- Crank M171, w/ CG, w/o Bolt Model No. FC-M171 Rear Speeds 8/7/6 Chaining Combination 42-34-24T Spider or Gear Arm 4 Arm PCD (mm) Riveted Crank Arm Length (
Shimano Fc-m171 Mtb Bike Crankset 28-38-48t M171 Chainwheel 7s 8s Fc M171 Bike Crankset 170mm Crank Bb Un101 - Bicycle Crank & Chainwheel - AliExpress