GS vs. GSX

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  • 78550GS
    • Jan 2026

    #1

    GS vs. GSX

    I was recently told by a decent source, that may or may not have the correct info, that I have a gsx750.....

    I'm not sure of differences or even how to tell by the engine number.

    The engine # starts with GS75X, and I was told it is in fact a gsx engine. Is this information correct?

    Also, are there any performance/rarity/desirability advantages if this is a GSX?
  • Steve
    GS Whisperer
    • Jun 2005
    • 35924
    • southwest oHIo

    #2
    Your posted location says that when the bike was sold, it was sold as a GS. The rest of the world, though, knew the same bike as a GSX.

    As far as I know, the four-valve engines were the ones that were known as "GSX".


    .
    sigpic
    mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
    hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
    #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
    #2 son: 1980 GS1000G
    Family Portrait
    Siblings and Spouses
    Mom's first ride
    Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
    (Click on my username in the upper-left corner for e-mail info.)

    Comment

    • 78550GS

      #3
      So, I know the difference between the heads, but is there any differences anywhere else?

      Better cams? Gear ratios? Anything of that sort?

      Comment

      • Steve
        GS Whisperer
        • Jun 2005
        • 35924
        • southwest oHIo

        #4
        Depending on the model, there might have been a different paint scheme.

        .
        sigpic
        mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
        hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
        #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
        #2 son: 1980 GS1000G
        Family Portrait
        Siblings and Spouses
        Mom's first ride
        Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
        (Click on my username in the upper-left corner for e-mail info.)

        Comment

        • Nessism
          Forum LongTimer
          GSResource Superstar
          Past Site Supporter
          Super Site Supporter
          • Mar 2006
          • 35768
          • Torrance, CA

          #5
          The US market bikes tend to have more smog controls compared to some other countries bikes. Carb jets are likely different, but not sure about internal engine changes.
          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

          • hampshirehog
            Forum LongTimer
            Past Site Supporter
            • Oct 2007
            • 12675
            • Hampshire. UK

            #6
            On the 750 models the most obvious difference between the GS and GSX is the shape of the tank. And of course the side panel badges!
            79 GS1000S
            79 GS1000S (another one)
            80 GSX750
            80 GS550
            80 CB650 cafe racer
            75 PC50 - the one with OHV and pedals...
            75 TS100 - being ridden (suicidally) by my father

            Comment

            • 78550GS

              #7
              Originally posted by hampshirehog
              On the 750 models the most obvious difference between the GS and GSX is the shape of the tank. And of course the side panel badges!
              Does anyone have a picture of these differences?

              Comment

              • hampshirehog
                Forum LongTimer
                Past Site Supporter
                • Oct 2007
                • 12675
                • Hampshire. UK

                #8
                Here's my GSX750 behind my mate's CB500. Humpback tank and the X on the side.
                79 GS1000S
                79 GS1000S (another one)
                80 GSX750
                80 GS550
                80 CB650 cafe racer
                75 PC50 - the one with OHV and pedals...
                75 TS100 - being ridden (suicidally) by my father

                Comment

                • hampshirehog
                  Forum LongTimer
                  Past Site Supporter
                  • Oct 2007
                  • 12675
                  • Hampshire. UK

                  #9
                  Here's my GSX750 behind my mate's CB500. Humpback tank and the X on the side.

                  79 GS1000S
                  79 GS1000S (another one)
                  80 GSX750
                  80 GS550
                  80 CB650 cafe racer
                  75 PC50 - the one with OHV and pedals...
                  75 TS100 - being ridden (suicidally) by my father

                  Comment

                  • eil
                    Forum Sage
                    • Dec 2012
                    • 3062
                    • SE Michigan

                    #10
                    Originally posted by 78550GS
                    I was recently told by a decent source, that may or may not have the correct info, that I have a gsx750.....

                    I'm not sure of differences or even how to tell by the engine number.

                    The engine # starts with GS75X, and I was told it is in fact a gsx engine. Is this information correct?

                    Also, are there any performance/rarity/desirability advantages if this is a GSX?
                    Some Suzuki GS bikes were marketed as "GSX" in various non-U.S. countries. So maybe the person who told you that was from somewhere else. In the U.S., all of our GSes were called GSes.

                    Chances are you have the same 1981 GS750E that I and lots of other people here on this forum have. They're great bikes, but not at all rare.

                    Pics would prove it beyond a doubt.
                    Charles
                    --
                    1979 Suzuki GS850G

                    Read BassCliff's GSR Greeting and Mega-Welcome!

                    Comment

                    • Kyler

                      #11
                      Originally posted by eil
                      ... various non-U.S. countries.

                      Comment

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