Bike Crank,104 Bcd Alloy Crankset 8/9/10/11 Speed Bcd Alloy Bike Alloy Bike Crankset Crank Arms Crank Left Crank Set 170mm 104 Mountain Bike Left 170mm 104 Bcd Crank Set 170mm Rookin
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104mm BCD. Square tapered crank arms. 170mm length for crank arm. Compatible with 8 / 9 / 10 / 11 speed. Come with a 4-bolt chainring.Narrow&wide teeth increase chain retention and wear life,reduce friction and noise.