I want to do all of the "hop-up" stuff to my 01wr426. But I need a yz exhaust. I have had some comeback and offers to buy some. But I got to thinking do I only need the silencer and not both????? I am kind-of tinder footed about doing my timing but I really would like some more snap. I cut my gray wire and that helped. I've pulled my silencer,airbox.... I have a great running bike now, easy to start so on and so forth. But I wish it was just a little bit more crispier. If anyone has just a silencer, if that is all I need, let me know a price. My header is in good shape. Thank you all.