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  • #1

    Aftermarket Master Cylinder

    The master cylinder assembly on my bike is pretty much a lost cause. There's cracks in the reservoir, etc and it most likely needs to be replaced. I was browsing ebay for a replacement but stumbled across several aftermarket "generic" alternatives. This there any reason why replacements such as these wouldn't work?:

    http://www.ebay.com/itm/Yamaha-XJ-Br...1f6891&vxp=mtr

    http://www.mikesxs.net/product/08-0255.html

    http://www.mikesxs.net/product/08-4004.html

    Namely, the first one because it is the most affordable. I assume all I would have to do is take off the old master cylinder and plug the old brake line into the new MC.
    78 E - 2to1 exhaust, dynatek coils, special headlight [SOLD!]
    79 F - gas tank refurb, headgasket change, straight pipes, late model carbs, virago lowering shocks, special headlight and gauges, TC fuse block, GSXR-1100 carbs (WIP)


    "May my tires not fail me, nor my engine grow cold"
    Tags: None
  • #2
    Just be careful of the piston size, larger bore is for dual front brake rotors, smaller for single. Then there is the mirror mount to consider. Left or right handed threads.
    2H7 (79) owned since '89
    3H3 owned since '06

    "If it ain't broke, modify it"

    ☮

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    • #3
      If you want to be sure you get exactly what you need, contact Michael Morse at 650 Central.

      Marty (in Mississippi)
      XS1100SG
      XS650SK
      XS650SH
      XS650G
      XS6502F
      XS650E

      Comment

      • #4
        There is a compatibility listing for the eBay master cylinder. If you run it for XS1100 it says it's OK. If you run it for XJ650 Maxim it says OK.

        This can not be, as the XS1100 is dual caliper and the XJ650 is single caliper. I would leave that one alone!
        Marty (in Mississippi)
        XS1100SG
        XS650SK
        XS650SH
        XS650G
        XS6502F
        XS650E

        Comment

        • #5
          master cylinder

          I don't know about he aftermarket ones,
          But had a leaky warped stock one, couldn't correct it, so bought a brand new one for an fj 1200 smaller mirror mount and no front brake light sensor
          (think I saw aftermarket ones on forum?)
          Was designed for dual discs, easy mounting great feel,$120.00 new
          at local dealer, Does not come with lever.
          78standard,79 & 80 Specials; 2 x 650 Maxims; 4 x RD350's; yz450; 2 x Honda tlr's;2x jt1 mini.

          Comment

          • #6
            Ebay

            Here is one on-line. May need a kit, but looks usable.


            http://www.ebay.com/itm/Yamaha-XS110...4cf21f&vxp=mtr

            MP
            1981 XS1100H Venturer
            K&N Air Filter
            ACCT
            Custom Paint by Deitz
            Geezer Rectifier/Regulator
            Chacal Stainless Steel Braided Brake Lines
            Chrome Front Rotor & Caliper Covers
            Stebel Nautilus Horn
            EBC Front Rotors
            Limie Accent Moves On In 2015

            Mike

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            • #7
              Originally posted by MPittma100 View Post
              Here is one on-line. May need a kit, but looks usable.


              http://www.ebay.com/itm/Yamaha-XS110...4cf21f&vxp=mtr

              MP
              Man that thing is about 100 bucks over priced.
              2-79 XS1100 SF
              2-78 XS1100 E Best bike Ever
              80 XS 1100 SG Big bore kit but not fully running yet.
              Couple of more parts bikes of which 2 more will live!

              Comment

              • #8
                Being the generous guy that I am, and coming from an ARMY family, I happen to have an extra master cylinder with brake lever and switch. I dunno if it's good or not, but that's for you to decide. Send me the price of shipping, and she's your's.
                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

                • #9
                  MikesXS.net

                  Here is what I have used on my 80SG along with SS lines it works great.

                  http://www.mikesxs.net/product/08-0265.html

                  $87

                  John
                  John is in an anonymous city with an Alamo (N29.519227,W-98.678980)

                  Go ahead, click on the bikes - you know you want to...the electrons are ready.
                  '81 XS1100H - "Enterprise"
                  Bob Jones Custom Navy bike: Tkat brace, EBC floating rotors & SS lines, ROX pivot risers, Geezer rectifier, new 3H3 engine

                  "Not all treasure is silver and gold"

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