HELP! Master Cylinder rebuild for 550L

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  • CA180
    #1

    HELP! Master Cylinder rebuild for 550L

    Help guys, i'm trying to track down a master cylinder rebuild kit for a front master on an 80 (81?) GS550L.... I'm not sure what year it is classified as because it says it was made 12/80... But Z1 classifies is as an 81 because of the frame numbers (JS1GN71L_B_100001 <- per Z1)

    Any way, they don't seem to offer one anymore and I talked to a guy up there and he said there isn't an aftermarket or OEM one either.

    Help me out! I got loads of gunk in this thing and some torn rubbers! (and thats never good!)
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    • Nessism
      Forum LongTimer
      GSResource Superstar
      Past Site Supporter
      Super Site Supporter
      • Mar 2006
      • 35788
      • Torrance, CA
      #2
      Your bike is an '81.

      My suggestion is to get the OE rebuild kit, P/N 59600-33810. Ordered a K&L master kit from Z1 for my 850 and the piston did not fit - binding in the bore. Z1 did not stand behind the product so it sits in a box...while the OE parts are happily working in my bike.
      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

        • CA180
          #3
          Sweet, and thats the one that works on my bike? I thought suzuki no longer offered it, or was I misled?

            Comment

            • Guest
              #4
              Round M/C or Rectangular?

                Comment

                • CA180
                  #5
                  Round with the (slightly) angled reservoir cup

                    Comment

                    • CA180
                      #6
                      http://www.babbittsonline.com/pages/...uzuki.aspx#top

                      Well, according to this site a rebuild kit isn't available for an 81 550l


                      But the master looks the same as all the others, wonder if it is different... Or maybe mine isn't original.

                        Comment

                        • Nessism
                          Forum LongTimer
                          GSResource Superstar
                          Past Site Supporter
                          Super Site Supporter
                          • Mar 2006
                          • 35788
                          • Torrance, CA
                          #7
                          Babbits doesn't even show a 1981 GS550L. If you go to the 550T, the part number I listed above is available. I'm pretty sure the master is the same since Alpha Sport lists the same part number for the 550L piston kit. http://www.alpha-sports.com/suzuki_parts.htm
                          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

                            • CA180
                              #8
                              Thanks, I'll give that a shot... Any good places to order from that might have a decent return policy in the event it doesn't work? :-D

                              I'm not doubting you, but I don't want to be stuck like you said you were

                                Comment

                                • Guest
                                  #9
                                  Suzuki part # 59600-33810 as Nessism said.
                                  http://www.mrcycles.com/fiche_section_detail.asp

                                    Comment

                                    • CA180
                                      #10
                                      Most excellent info guys, I will order ASAP!

                                      Thanks alot, once again GSR comes through!

                                        Comment

                                        • Killer2600
                                          #11
                                          This is an old thread but I just have to say my K&L master cylinder rebuild kit fit as good as OEM, no binding, noises, or anything.

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