Shimano GRX RD-RX822-GS Rear Derailleur-12-Speed Direct Mount Shadow Plus Design

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. Largest Cog: 45 Rear Der/Shifter Compatibility: Shimano Road Rear Derailleur Mount Type: Shimano Rear Direct Mount Rear Derailleur Mount Type: 10x1 Standard Drivetrain Speeds: 12 Weight: 290 Chain Wrap Capacity (teeth): 35 Cage Length: Medium