Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x, 42t Low Sprocket Max

The Shimano GRX 11-speed rear derailleur has an integrated chain stabilizer mechanism, that provides a quieter experience, shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted rear shifting on rough terrain. Adjustable Shimano RD+ chain stablizer prevents chain slapping and drops Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting Compatible with Shimano road Dual Control Levers Compatible with Shimano LinkGlide and HG 11-speed chains Rear Derailleur Mount Type: Shimano Rear Direct Mount Rear Derailleur Mount Type: 10x1 Standard Rear Der/Shifter Compatibility: Shimano Road Cage Length: Long Drivetrain Speeds: 11 Weight: 267 Color: Black Chain Wrap Capacity (teeth): 31 Largest Cog: 42