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77 GS 750 front master cylinder/lever replacement

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    77 GS 750 front master cylinder/lever replacement

    Are all GS models master cylinders interchangeable for 77 to 80 GS's? I have a 77 750 with opportunity to get used 78 550 master cylinder. Will it work? Or should I get new and what brands recommended?

    #2
    It's more the bore size that's important.
    14 mm for single disc models
    16 mm (5/8) for twin disc models
    1978 GS 1000 (since new)
    1979 GS 1000 (The Fridge, superbike replica project)
    1978 GS 1000 (parts)
    1981 GS 850 (anyone want a project?)
    1981 GPZ 550 (backroad screamer)
    1970 450 Mk IIID (THUMP!)
    2007 DRz 400S
    1999 ATK 490ES
    1994 DR 350SES

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      #3
      Personally I would get something more modern if you're not worried about originality. One from a KLR 650 would fit a single brake model as would one from an EX300 or similar. I like the EX650 for the twin brake models.
      1980 GS1000G - Sold
      1978 GS1000E - Finished!
      1980 GS550E - Fixed & given to a friend
      1983 GS750ES Special - Sold
      2009 KLR 650 - Sold - gone to TX!
      1982 GS1100G - Rebuilt and finished. - Sold
      2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

      www.parasiticsanalytics.com

      TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

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