I am thinking of buying a slip on exhaust/jet kit for my '09. I use the bike for commuting, however, and was wondering about issues of legality for sound/emiisions/general street riding. I live in Arizona, and have not been able to find much regarding this topic.

 

You can use a klx300 exhaust and header!

 

is this what your lookin for?
http://home.ama-cycle.org/amaccess/l...t.asp?state=az
hope that helps.