Front and Rear master cylinder diaphrams??

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  • adelii
    XSive
    • Jun 2015
    • 94
    • Tuscon, AZ.
    #1

    Front and Rear master cylinder diaphrams??

    So was rebuilding my master cylinders and the disphrams are broken. Am i screwed?

    Anything i can get aftermarket?

    i also needs a rear brake caliper piston. im surprised i could even brake lol


    any help is appreciated
    79 SF
    Tags: None
    • IanDMacDonald
      XS-XJ Super Guru
      • Oct 2010
      • 3917
      • Grand Blanc & Fenton, MI
      #2
      Like this: http://www.ebay.com/itm/401229529599
      Pardon Our Interruption...
      http://www.ebay.com/itm/351955268990

      Yamaha XS1100 Brake Caliper Piston, HVC200106F
      https://hvccycle.net/yamaha-xs1100-brake-caliper-piston-hvc200106f/
      Yamaha, Yamaha break caliper pistons, XS1100, Brake caliper piston, HVC200106F-XS11,


      And, just buy a used master cylinder.
      1979 XS1100F
      2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

        Comment

        • adelii
          XSive
          • Jun 2015
          • 94
          • Tuscon, AZ.
          #3
          You are the man!

          can i get a stock part number for a rear diapgrahm and a rear brake piston?
          79 SF

            Comment

            • adelii
              XSive
              • Jun 2015
              • 94
              • Tuscon, AZ.
              #4
              Welp, got me the front diaphragm and brake piston new.

              Rear brake Diaphragm is just not made anymore i guess.

              anybody got a used one in good condition i can buy?
              79 SF

                Comment

                • IanDMacDonald
                  XS-XJ Super Guru
                  • Oct 2010
                  • 3917
                  • Grand Blanc & Fenton, MI
                  #5
                  Contact Andreas.
                  1979 XS1100F
                  2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

                    Comment

                    • TopCatGr58
                      Administrator
                      • Jul 2002
                      • 12650
                      • Portsmouth, Va.
                      #6
                      Hey Adelii,

                      I don't have one, but looking up the part on the fiche, it's this Yamaha# 1J3-25854-51-00 that you might be able to use/search with on eBay. Boats.net shows it, but also shows it as NOT AVAILABLE either.

                      Other machines it was used on were:

                      76 XS500c
                      77 XS400D; 500D; 750
                      78 XS400E;500E; 750E; 1100E
                      79 XS400F; 750F; 1100F
                      80 XS850G; 1100G
                      81 XS850H;1100H
                      82 XJ1100

                      Good Luck.
                      T.C.
                      T. C. Gresham
                      81SH "Godzilla" . . .1179cc super-rat.
                      79SF "The Teacher" . . .basket case!
                      History shows again and again,
                      How nature points out the folly of men!

                        Comment

                        • adelii
                          XSive
                          • Jun 2015
                          • 94
                          • Tuscon, AZ.
                          #7
                          thanks for the help. i ended up purchasing a used rear master cylinder on ebay. Im just praying the diaphragm is ok
                          79 SF

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