So I own a 2004 YZ450F. Have been using for a number of years in TX, and now I moved to NY. I need a spark arrestor here to ride anywhere. What is my cheapest option for meeting USFS compliance. I'm aware of the PMB spark arrestor, but that seems like a good amount of money to be throwing at my exhaust
when I can likely get a used aftermarket exhaust for a few bucks more. I am more than happy with the amount of power this bike produces, so if I can pick up a cheap stock WR exhaust I'd be fine with it. That said, can a WR450 exhaust (or maybe even a WR250) be thrown onto my YZ450?
Another question would be what year exhausts would fit my bike? Could a yz426 exhaust fit? Pretty much whatever combo you can think of. Ideally I'd rather not mess with my carb jetts too.
Edited by SteveKing84, January 29, 2013 - 05:03 PM.