Hi all, I was hoping someone could advise me! I have a wr450 06 with standard 06 exhaust but someone previously has removed the end pipe pee shooter thing and spark arrestor. The bike has loads of power and runs fine, unfortuneatly it’s a little loud for me and I am looking to re-install the baffle/end pipe. No i am not getting old ! LOL This is how it looks with only the silver end cap removed. http://cid-f3764d65c9e0e211.skydrive.live.com/self.aspx/.Public/Image162.jpg My friend has made me a new end pipe/baffle 38mm Pee shooter PBM style The same as item No 10 in this picture. http://cid-f3764d65c9e0e211.skydrive.live.com/self.aspx/.Public/5242^_exhaust.jpg He is good and I will also add a home made spark arrestor !!! My question is do I pack with exhaust wadding the chamber around the spark arrestor, or leave it empty – was it packed when it was new ? Many thanks and great forum.