This basically starts where I left off on a post in the CRF450R/X forum. (they said go with the XR, good guys there) I've decided on giving my 1200GS a stable mate, and it will be the XR650R. Here's what I need to know though; - What is the lightest & most quiet aftermarket exhaust I can put on an uncorked XR? (expensive titanium not counted out) - Besides the uncorking, and the exhaust is there anything else that is a must do? (street legal dual sport, 60/40 trail/street) The priorities for me are making it light and not sacrificing dependability. Thanks!