Bicycle Rear Derailleur Pulley Jockey Wheel 12T For-SRAM XX1 XO1 X1 GX 11Speed. Narrow wide Jockey Wheel. 2 x Jockey Wheel. Colour: Black (As Pictures Show). The real colour of the item may be slightly different from the pictures shown on the website caused of many factors such as the brightness of your monitor and light brightness.
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