Yes I did I got the quat d ex box from the uk distributors, Dynomax. Overall, I am very happy with the exhaust It's not as deep as some regular exhausts, but there is nothing else that i have heard that sounds like it. It is very well built and makes the bike look pretty unique too. A couple things I have noticed - there is a weird whistling noise at certain revs and sometimes it can sound a bit metallic (hard to describe).