I just put on a D&D for my xb12r and trust me... ITS LOUD AS F*CK. The cops were straight onto me when I took it out for its first run since the crash. Im thinking of gutting my stock pipe similar to the drummer and going with that. The race pipe appears to only be a stock pipe with the third-pass removed. So as far as I can figure, you can chop the end of a xb12 muffler off and blank the third pass off, put two outlets on it and pin the valve open. Anyone agree with this??? the d&d is just rediculously loud