Shimano Shimano GRX RX810 Pulleys Rear Derailleurs Pulleys bike/components/derailleurs & shifters roxy You'll be amazed at what

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Shimano Shimano GRX RX810 Pulleys Rear Derailleurs Pulleys bike/components/derailleurs & shifters roxy You'll be amazed at whatPulley 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