Hi Everyone, First to introduce myself, I am new to dirt bikes, but have been riding for about 10 years including road racing for 4 years. I purchased a '00 Canadian WR this spring. Unfortunatly, do to travel for work I have gotten to ride it ONCE. :-( When not travelling for work, the bike will mainly be used for trail riding in Michigan. I am concerned that the non-USFS exhaust may lead to trouble. I am looking for the best exhaust options that have an approved spark-arrestor and is quiet. When I say quiet I am talking about near stock levels. Michigan State Law is 94dB @ 20". I would like to hear personal experiences with your choices in this area. Some of my considerations: US-Spec WR Exhaust WRD Disk Cap on WR or YZ can SuperTrapp IDS BigGun Exhaust with SA Baffle To change gears a bit, the travel I spoke of above has me temporarily located in Missouri, living in an apartment. I am strongly considering bringing the WR down from Michigan after it has been road-registered. I would be interested in learing about local riding spots or hearing from riders in the St. Louis area.