i recently picked up a gtyr slip on pipe for my 04 wr450 and i like the roll on power that it gives but im pretty sure that there is no spark arrestor in there. i have done a bit of searching and found a few posts from 06ish that pointed to the pmb end cap 134$. is there any more options? any thing cheaper?
Edited by Ejones, July 21, 2015 - 03:08 AM.