Description
microSHIFT M21 Rear Derailleur – 6/7 Speed Super Short Cage Dropout Claw Hanger Black. 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
Largest Cog 30Rear Der/Shifter Compatibility Shimano MountainRear Derailleur Mount Type Dropout Claw HangerDrivetrain Speeds 6Drivetrain Speeds 7Chain Wrap Capacity (teeth) 21Cage Length ShortColor Black
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