Bike Crank Arms, Single Crank Ring Set, 170MM 104 BCD, Aluminum Alloy for Mountain Bikes
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104mm BCD.color:#c0392b;color:#c0392b; 170mm length for crank arm.line-height: 20.8px;line-height: 20.8px; tapered crank arms. Compatible with 8 / 9 / 10 / 11 speed. Aluminum alloy material for light weight and strong strength.