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
- Long cage for double or triple 32T setup
- Includes frame hanger attachment
Manufacturer microSHIFT
Manufacturer Part Number RD-M21LA
UPC 4710495436357
Model microSHIFT M21 Rear Derailleur
Rear Derailleur Style Mountain
Largest Cog
32
Rear Der/Shifter Compatibility
Shimano Mountain
Rear Derailleur Mount Type
Dropout Claw Hanger
Drivetrain Speeds
6
Drivetrain Speeds
7
Chain Wrap Capacity (teeth)
43
Cage Length
Long
Color
Black
Weight
316