MTB crankset 9speed 22-32-44T bicycle crank set aluminum alloy 170 cranks 64/104BCD chainring bike crankset part. Product:BUCKLOS 104BCD Bicycle Crank. BCD: 104BCD. 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.
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