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Thread: What Mastercylinder bore size for a J6 single rear caliper.

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  1. #1
    Join Date
    Mar 2015
    Location
    usa
    Posts
    1

    Default What Mastercylinder bore size for a J6 single rear caliper.

    I have a Bourget Kruzer FXR that has a single 6 piston Jay brake rear caliper and an 11.5in rotor. The rear brake is weak and the pedal feels rock hard. It takes way more pressure then it should. I have flushed and bleed the lines. I am running EBC HH pads with a EBC stainless floating rotor. I got to investigating why and it looks like it has a 3/4in bore rear master cylinder. It seems like the master Cylinder is just to big for a single rotor. I'm guessing that i need to go with a 5/8 bore MC?

    So my question is what is the recommended rear master cylinder bore size for a single J6 caliper?

  2. #2
    Join Date
    Feb 2015
    Location
    United States
    Posts
    27

    Default

    Your assessment sounds correct and the 5/8" should work well with the single 6-piston caliper.

  3. #3
    Join Date
    May 2017
    Location
    Sweden
    Posts
    2

    Default

    Thank you schultz!

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