Ditto on that. I got mine a week after I bought the bike. I would have gotten them sooner, but was waiting for more to come in to my dealer. Sound more throaty than most I've heard with a noticeable performance boost (assuming jet changes, etc.). I've got over 11,000 on mine.
I took the baffles out once and rode around the block. Put them back in and haven't done that again. Sometimes I think mine are a bit loud, but only until I ride with my Harley friends. Then they seem quite respectable.