Shimano Deore M591 9-Speed Rear Derailleur

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The Shimano Deore M591 9-speed top-normal rear derailleur offers smooth, crisp shifting and a clean, elegant design.

  • Features

    • Double Servo-Panta mechanism is tough and its proven technology delivers durability and reliability
    • Versatile design works well for trekking on and off road
    • Compatible with 28-34T low sprocket
    • Capacity: 45T
    • Compatible with all Shimano 9-speed HG cassettes, 9-speed shifters and 9-speed chains


    View the Shimano Deore Product Line View all Shimano Rear Derailleurs
  • Technical Specs

    Best Use

    Mountain Biking

    Derailleur Type


    Cage Length

    Long Cage

    Max Rear Cog Size





    305 grams

  • Reviews
    9 reviews with an average rating of 4.7 out of 5 stars

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