170mm Mountain Bike Crank Arm 64/104BCD 22 32 44T 39S Chainwheel Crankset

  

64/104BCD MTB Crankset 22T 32T 44T Triple Speed Bicycle Chainring 170mm Aluminum Crank Arm 39S Chainwheel Bike Parts. Material: Steel(22/32/44T) BCD: 104mm/64mm Feature(only include 22/32/44T):special teeth profiles design is lead to the chain leave the chainring easier when variable speed happened. Secondly, because of the concave and convex design, the chain has an excessive place, so the riding speed can be smoother. Product: 104BCD Bicycle Crank BCD:104BCD Length:170mm Weight:532.5gCA. Material:Aluminum Alloy Fit BB:Square Hole Fit Chainring:Single/Double/Triple Chainring Compatible With:8/9/10/11 Speed.