microSHIFT M21 Rear Derailleur - 6,7 Speed, Long Cage, Black
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
- Long cage for double or triple 32T setup
|Rear Derailleur Mount Type||10x1 Standard|
|Chain Wrap Capacity (teeth)||43teeth|
|Rear Der/Shifter Compatibility||Shimano Mountain|