Dual disc swap

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  • snake89
    Forum Newbie
    • Mar 2026
    • 12
    • Memphis, Tn.

    #1

    Dual disc swap

    Will the GS 750,850,1000 front forks and wheel slip into the 550 triple clamps or do you need the triple clamps from these to do the swap ?
  • Nessism
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    Super Site Supporter
    • Mar 2006
    • 35828
    • Torrance, CA

    #2
    The 550 forks are skinnier.
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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    • snake89
      Forum Newbie
      • Mar 2026
      • 12
      • Memphis, Tn.

      #3
      Thanks for the info.

      Comment

      • Big T
        Forum LongTimer
        Past Site Supporter
        Super Site Supporter
        • Mar 2005
        • 12424
        • West Slope, OR

        #4
        The 78 and newer 550 E has dual disc's

        Larger model triple clamps may/ may not fit the 550 neck

        The easiest way to upgrade would be E fork lowers with upgraded calipers ala Salty_Monk Twinpot Upgrade
        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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        • Nessism
          Forum LongTimer
          GSResource Superstar
          Past Site Supporter
          Super Site Supporter
          • Mar 2006
          • 35828
          • Torrance, CA

          #5
          Actually, the only 1st gen 550 to get dual disc's in the USA market was the Katana 550M. Second gen 550's did get dual discs, though.

          IMG_0446 by nessism, on Flickr
          Ed

          To measure is to know.

          Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

          Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

          Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

          KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

          Comment

          • salty_monk
            Forum LongTimer
            GSResource Superstar
            Past Site Supporter
            Super Site Supporter
            • Oct 2006
            • 14029
            • London, UK to Redondo Beach, California

            #6
            The easiest way to upgrade the 550 is to use 650G fork legs as they are 35mm the same. You can then go a step further & use the Twinpot caliper & CBR rotors.

            The other route is to use a Honda blackbird rotor & a twinpot caliper. Either way you'll need brackets & spacers to make it work. I have a few sets left on my shelf.
            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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