Shimano GRX RD-RX815 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, Di2, For 1x and 2x

GRX RD-RX815 Di2 Rear Derailleur For 1x and 2x drivetrains Operates with Shimano Di2 for digital electronic shifting Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 38 Color Black Drivetrain Speeds 11 Largest Cog 34 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 287 Shimano GRX RD-RX815 Di2 Rear Derailleur UPC: 192790443188