Model: FM4
Material: Aluminum alloy
BCD: 104mm
Arm length: 170mm
For:MTB
Speed difference: 8/9/10/11/12
weight:
Crank: 680g
Bottom bracket: 100g
Accessories: 30.5g
32T: 40g
34T: 50g
36T: 60g
38T: 74g
40T: 76g
42T: 91g