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Thread: GS 650 rear caliper rebuild

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  1. #1
    Join Date
    Sep 2021
    Houston TX

    Default GS 650 rear caliper rebuild

    Alright me again, spamming the board with questions cause I canít find exactly what I need.

    for the pistons on the rear calipers, is the only way to get the pistons out is using two screw drivers to try and pry them out? BikeCliffs manual describes a way for a braking system that works, but mine has no pressure and is completely disassembled. (

    im considering just leaving the pistons in and soaking everything in brake cleaner then putting new seals on, but I feel like that might just cause issues especially if the pistons are seized.

    any and all recommendations are accepted.
    Main lady- 2009 Nightster 1200
    Project Lady- 1982 GS650 G

  2. #2
    Nessism's Avatar
    Nessism is offline Forum LongTimer GSResource Superstar
    Past Site Supporter
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    Join Date
    Mar 2006
    Torrance, CA


    Compressed air or grease injection pump work well

  3. #3
    cowboyup3371's Avatar
    cowboyup3371 is offline Forum LongTimer Past Site Supporter
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    Join Date
    Apr 2010
    In Ohio Now


    I tried the air and found I still needed to pry them out after so long. But be sure to use rags around the piston when you do so as not to scratch anything

    Cowboy Up or Quit. - Run Free Lou and Rest in Peace

    1981 GS550T - My First
    1981 GS550L - My Eldest Daughter's
    2007 GSF1250SA Bandit - My touring bike

    Sit tall in the saddle Hold your head up high
    Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
    and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

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