Shimano GRX RD-RX822-GS Rear Derailleur - 12-Speed Direct Mount Medium Cage Shadow Plus Design 45t Max Low caliper Secure on and off-road capable

Secure on and off-road capable handlebar mount

Tool compartment

Lighter stiffer more precise and easier to maintain - the strengths of the 180 hub are further enhanced with the new Ratchet EXP technology

5" 15 x 110mm Boost Center Lock Black

Shimano GRX RD-RX822-GS Rear Derailleur - 12-Speed Direct Mount Medium Cage Shadow Plus Design 45t Max Low caliper Secure on and off-road capableShimano GRX RD RX822 GS Rear Derailleur 12 Speed Direct Mount Medium Cage Shadow Plus Design 45t Max Low. With an integrated chain stabilizer Shimano GRX RD RX822 12 speed rear derailleurs feature an intergrated chain stablizer that delivers quieter shifting and more secure chain management in rough terrain. The chain tensioner has an ON OFF switch for easy wheel removal. TECH SPECS Largest Cog 45 Rear Der Shifter Compatibility Shimano Road Rear