M21 rear derailleurs are designed to work with 6- and 7-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- and 7-speed mountain and road systems

Color: Black
Largest Cog: 32
Rear Derailleur Mount Type: 10x1 Standard
Chain Wrap Capacity (teeth): 21
Cage Length: Short
Rear Der/Shifter Compatibility: Shimano Mountain , Shimano Road
Drivetrain Speeds: 6 , 7
Weight: 241