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Thread: Will a stock 04 xb12r exhaust fit an 03 xb9s?

  1. #1
    Senior Member
    Join Date
    Aug 2013
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    101
    Will it run good? Better? Sound better?

  2. #2
    Senior Member
    Join Date
    Apr 2013
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    1,188
    I'm sure it will mount up and fit but the 12 muffler had an interactive valve in it and without wiring it open in some way you may not get the performance or sound out of it that you're looking for. Being a stock muffler, I doubt you'll get any difference in performance or sound anyway unless you gut it out.

  3. #3
    When I got my exhaust done by Hawk exhaust,I bought another exhaust just in case if didn't like it and someone told me that the opening for the header for the exhaust is different sizes for the 12r and 9r. I have an 9r and the header is smaller in diameter than an 12r. Not sure if this is true but that's what I heard so I just went with an 9r exhaust.



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