Holy crap. That is very expensive for an exhaust. I'm just not convinced that I wouldn't be able to find something equally as satisfying for less.
Probably things you're a newb. Of course you know better, install the stock one before going in to the dealer for warranty workI mentioned replacement exhausts to the local dealer, he said if not a yamaha approved one, the warranty would be void! (Not sure if that's right of if he's trying to get another grand out of my pocket!