microSHIFT M21 Long-Cage 6/7-Speed Rear Derailleur - Dropout Claw Hanger

Size: Long Cage
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Boasting the same kinematics as more expensive derailleurs, the 6/7-speed microSHIFT M21 long-cage rear derailleur with claw hanger mount delivers responsive performance in an attainable package.

  • Features

    • Robust composite and steel construction improves durability and shifting response
    • Compatible with 6- and 7-speed mountain systems
    • Includes claw hanger dropout mount for use on bikes without standard rear derailleur hangers
    • Derailleur capacity is 43 teeth


    View all microSHIFT Rear Derailleurs
  • Technical Specs

    Best Use

    Mountain Biking

    Derailleur Type


    Cage Length

    Long Cage

    Max Rear Cog Size





    316 grams

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