Replacement front Master Cylinder

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  • BlackStar
    • Feb 2026

    #1

    Replacement front Master Cylinder

    Can anybody reccomend a universal replacement front MC with a 14mm bore, brakelight switch, 7/8 bar mount and mirror mount? Mine is badly corroded and filled with sludge.

    Thanks
    Last edited by Guest; 05-06-2007, 06:32 PM.
  • archerGS

    #2
    i recently put a 1200 bandit master cylinder on my gs. not sure of the year i can get back to u. but i believe its a 2000. it has a mirror post and fits a 7/8 bar. i also had a gsxr MC on it for a while but got tired of the bar end mirror.

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    • BlackStar

      #3
      I found this at the old bike barn. I ordered one, it has the correct bore diameter for my application. I'll post a review when I get it.

      Comment

      • earlfor
        Forum LongTimer
        Charter Member
        GSResource Superstar
        Past Site Supporter
        • May 2002
        • 42413
        • off grid cabin 1/24/26 7pm

        #4
        That wouldnt be you Ann, would it? Welcome back! :-)

        E.


        Originally posted by archerGS
        i recently put a 1200 bandit master cylinder on my gs. not sure of the year i can get back to u. but i believe its a 2000. it has a mirror post and fits a 7/8 bar. i also had a gsxr MC on it for a while but got tired of the bar end mirror.
        Komorebi-The light filtering through the trees.

        I would rather sit on a pumpkin and have it all to myself than be crowded on a velvet cushion. H.D.T.

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        • amsanders

          #5
          question

          I have a 1981 GS 750E in need of a front brake master cylinder.... I have found a Front master cylinder for a 1981 GS750G.....will it work?

          Comment

          • Nessism
            Forum LongTimer
            GSResource Superstar
            Past Site Supporter
            Super Site Supporter
            • Mar 2006
            • 35789
            • Torrance, CA

            #6
            Brand new for $50 on ebay.

            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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            • aosmith

              #7
              honeslty i needed a new perch for my front brake but whats the point of the brake light? how often do use actually use your front brakes without you rears?

              Comment

              • Nessism
                Forum LongTimer
                GSResource Superstar
                Past Site Supporter
                Super Site Supporter
                • Mar 2006
                • 35789
                • Torrance, CA

                #8
                Originally posted by aosmith
                honeslty i needed a new perch for my front brake but whats the point of the brake light? how often do use actually use your front brakes without you rears?
                Better question is why use the rear at all?
                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

                • Guest

                  #9
                  Originally posted by amsanders
                  I have a 1981 GS 750E in need of a front brake master cylinder.... I have found a Front master cylinder for a 1981 GS750G.....will it work?
                  As long as they are both dual discs. yes.

                  I use both my front and rear brakes. I ride hard and have to stop fast.:shock:

                  Comment

                  • txironhead

                    #10
                    I have found that master cylinders are pretty much universal. I had a Yamaha master on my Shadow and a Ninja master on my GS750EX. As long as it's for the same number of discs, you should be good. Plus, a newer master cylinder means easier-to-find rebuild kits and a modern, replaceable brake switch, just cut the old switch wires and add connectors for the new switch.

                    As for only needing one switch, what if your rear switch fails? I'd rather have a double-redundant system than have one shorted wire end up with a Cadillac giving me an enema.

                    As was pointed out in a previous discussion, if you use a Kawasaki master you will have to use the Kawasaki banjo bolt. All the rest are pretty much universal. Save yourself some headaches and buy new crush washers, too. They're cheap and cheap insurance.

                    Add some braided steel lines front and rear, and you've got yourself a bike that stops as well as a new one, well, almost.

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