Shimano GRX Rear Derailleur

SHIMANO GRX, with its gravel-specific ergonomics, optimized shifting options, robust reliability and quiet, stable drivetrain, stands apart from others in the components world. It is not a reworked version of a road groupset. It represents a new way of thinking about how riders want to explore their world. SHIMANO GRX helps you eliminate excuses, urging you to try that rough trail or pedal a little longer. It gives you the opportunity to explore ever further.