Shimano GRX RD-RX822 Shadow+ 12 Speed Rear Derailleur - Rear Derailleur - 12 Speed - Black - Mid Cage - 1x12 - 45T Max

Description

With its integrated chain stabilizer and medium cage. the SHIMANO GRX rear derailleur delivers quieter shifting. better ground clearance and more secure chain management in rough terrain. The RD-RX822-SGS is compatible with 10-51T. 12-speed SHIMANO MTB cassettes. and the chain tensioner has an ON/OFF switch for easy wheel removal.