microSHIFT M21 Rear Derailleur, 6/7-Speed, Long Cage, Frame Hanger, Shimano Compatible

M21 rear derailleurs are designed to work with 6, 7, 8-speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs. Robust composite and steel construction Compatible with Shimano 6, 7, 8-speed mountain and road systems Frame hanger attachment Long cage for double or triple 32T setup Item Specifications Color Black Weight 316 Largest Cog 32 Chain Wrap Capacity 43 Cage Length Long Drivetrain Speeds 6 Drivetrain Speeds 7 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type Dropout Claw Hanger