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  • Needing Parts

    I have searched this site some but to no avail. Yamaha out of Bloomsburg,Pa does not have the part I need and wondering if there are other NOS resources or possibly OEM replicas suppliers for rubber parts, i.e. bushings,brakes etc.

    I need a rear master cylinder diaphragm. I know many of the metrics crossed over especially on parts like these but the NOS parts suppliers do not have a way to do this I have found.

    Any two cents is worth more to me
    Thanks
    1980 XS1100S
    2003 Honda VTX 1800C

    " The thrill of owning an older bike is the hunt to keep them alive!"

  • #2
    The diaphragm is NLA (obsolete). Here is a list of bikes that have the same rear master cylinder.

    This Yamaha 1J3-25854-51-00 DIAPHRAGM RESERVOR is used on these models and components:

    1976 XS500C BRAKE PEDAL - MASTER CYLINDER
    1977 XS400D BRAKE PEDAL - MASTER CYLINDER
    1977 XS500D BRAKE PEDAL - MASTER CYLINDER
    1977 XS750-2D BRAKE PEDAL - REAR MASTER CYLINDER
    1978 XS1100E BRAKE PEDAL-REAR MASTER CYLINDER
    1978 XS400E BRAKE PEDAL - REAR MASTER CYLINDER
    1978 XS500E BRAKE PEDAL REAR MASTER CYLINDER
    1978 XS750E BRAKE PEDAL - REAR MASTER CYLINDER
    1978 XS750E_227 BRAKE PEDAL - REAR MASTER CYLINDER
    1978 XS750SE BRAKE PEDAL - REAR MASTER CYLINDER
    1978 XS750SE-31 BRAKE PEDAL REAR MASTER CYLINDER
    1979 XS1100F BRAKE PEDAL - REAR MASTER CYLINDER
    1979 XS400F BRAKE PEDAL - REAR MASTER CYLINDER
    1979 XS750F BRAKE PEDAL - REAR MASTER CYLINDER
    1979 XS750SF BRAKE PEDAL - REAR MASTER CYLINDER
    1980 XS1100G BRAKE
    1980 XS1100LG BRAKE
    1980 XS1100SG BRAKE
    1980 XS850G REAR MASTER CYLINDER
    1980 XS850LG REAR MASTER CYLINDER
    1980 XS850SG REAR MASTER CYLINDER
    1981 XS1100H BRAKE
    1981 XS1100LH BRAKE
    1981 XS1100SH BRAKE
    1981 XS850H REAR MASTER CYLINDER
    1981 XS850LH REAR MASTER CYLINDER
    1981 XS850SH REAR MASTER CYLINDER
    1982 XJ1100J BRAKE

    Mike's XS has an XS650 replacement that might do the trick, although I haven't heard of anyone on here using one. The XS650 has the same or very similar rear caliper to the XS11.


    Put what bike you have in your signature, so we can better help you.
    Marty (in Mississippi)
    XS1100SG
    XS650SK
    XS650SH
    XS650G
    XS6502F
    XS650E

    Comment


    • #3
      The owner of xj4ever.com knows just about everything concerning parts for these bikes. His web site has online catalogs of parts.
      82 XJ1100 - sold
      96 Honda Magna 750 - Girlfriend's bike
      2000 ZRX1100 - sold
      2003 FJR1300 - Silver rocket

      Comment


      • #4
        http://xj4ever.com/catalog/j-5-rear.html

        Looks like the diaphragm is discontinued.

        HCP7579 OEM rear master cylinder RESERVOIR DIAPHRAM, brand new round rubber diaphram fits and seals as original. Fits all original XJ1100 and XS1100 rear master cylinders. Each:
        $ discontinued
        82 XJ1100 - sold
        96 Honda Magna 750 - Girlfriend's bike
        2000 ZRX1100 - sold
        2003 FJR1300 - Silver rocket

        Comment


        • #5
          Thanks very much for the reply and assistance I'm doing the research on all these now.
          1980 XS1100S
          2003 Honda VTX 1800C

          " The thrill of owning an older bike is the hunt to keep them alive!"

          Comment

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