Bicycle Rear Derailleur Pulley Wheel 12T For-SRAM XX1 XO1 X1 NX Apex、Rival、Force、RED 11Speed. Narrow wide Wheel. Just follow the Guest Checkout instructions. Color: Black (As Pictures Show). The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
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