Help with piston Id

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  • GSEScraze
    • Feb 2026

    #1

    Help with piston Id

    What I have is an 1981 gs1100e 74mm bore pistons have 4178ts stamped in the top of them what do I have please is this 1133 cc big bore kit ?
    Thanks in advance
    Tom
  • Guest

    #2
    Originally posted by GSEScraze
    What I have is an 1981 gs1100e 74mm bore pistons have 4178ts stamped in the top of them what do I have please is this 1133 cc big bore kit ?
    Thanks in advance
    Tom
    Seems that way.

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    • GSEScraze

      #3
      Originally posted by chef1366
      Seems that way.
      Thanks for the reply Is there any way to tell the make of the kit by the numbers I tried searching google with no luck tried Ebay too
      Thanks
      Tom

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      • niclpnut
        Forum Sage
        Past Site Supporter
        • Sep 2010
        • 1274
        • Peculiar, MO

        #4
        Tom, wiseco part number for 74mm piston starts with 4178.

        http://www.wiseco.com/ProductDetail....983&AppID=7596
        83 GS1100ES rebuild:

        http://www.thegsresources.com/_forum...d.php?t=170032

        Budget GSXR Conversion:

        http://www.thegsresources.com/_forum...d.php?t=200563

        New to me bike: 2008 B-KING

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