microSHIFT M21 Rear Derailleur - 6,7 Speed, Short Cage, Black

$13.33 Regular price $14.99
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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
  • MPN: RD-M21S
  • UPC: 657993356869
  • Cage LengthShort
    Chain Wrap Capacity (teeth)39
    Drivetrain Speeds6
    Drivetrain Speeds7
    Largest Cog34
    Rear Der/Shifter CompatibilityShimano Mountain
    Rear Derailleur Mount Type10x1 Standard
    SKU: RRDR0382