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

IRDRX815 Shimano Shimano GRX RD-RX815 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, Di2, For 1x and 2x Rear Derailleur EA Black Largest Cog 34 Color Black Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type Shimano Rear Direct Mount Rear Derailleur Mount Type 10x1 Standard Drivetrain Speeds 11 Weight 287 Chain Wrap Capacity (teeth) 38 Cage Length Long