Shimano Shimano GRX RX810 Pulleys Rear Derailleurs Pulleys bike/components/derailleurs & shifters roxy bubble leg pockets for easy

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Shimano Shimano GRX RX810 Pulleys Rear Derailleurs Pulleys bike/components/derailleurs & shifters roxy bubble leg pockets for easyPulley kit for Shimano GRX derailleurs RD RX810 RD RX815 Precision sealed bearings in both guide and tension pulleys keep drivetrain smooth and friction free Attributes Pulley Compatibility RD RX810