microSHIFT
microSHIFT M21 Rear Derailleur
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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
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- Color: Black
- Largest Cog: 32
- Rear Derailleur Mount Type: 10x1 Standard
- Chain Wrap Capacity (teeth): 21 Super Short, 43 Long
- Cage Length: Short Cage, Long Cage
- Rear Der/Shifter Compatibility: Shimano Mountain , Shimano Road
- Drivetrain Speeds: 6 , 7
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