Bike Tools Wheel Pulley Rear Derailleur 26g For-SRAM XX1/XO1/X1/GX
Bicycle Rear Derailleur Pulley Wheel 12T For-SRAM for XX1 XO1 for X1 for GX NX Apex、 for Rival、 for Force、RED 11Speed. Weight: About 26g. Narrow wide Wheel. Just follow the Guest Checkout instructions.