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GS750 1977 exhaust header diameter

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    GS750 1977 exhaust header diameter

    Hello

    Can anyone tell me the diameter of a stock exhaust header for 1977 GS750, the diameter of the exhaust port is 46mm

    thanks

    toby

    #2
    exhaust sleeve

    In addition, there is a loose metal tube that is over the header pipe but is kept from slipping over the pipe by slight flaring, should i apply copper silicone to it to fill any gaps?

    Toby

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