Big power is what you can expect when you install the Big Gun EVO Race series muffler. Stainless steel pipe construction that has been tig welded give the Big Gun Evo Race series exhaust the durability to last. Big Gun sheds the pounds by using a 6061 aluminum sleeve on the Evo Race exhaust. A CNC billet aluminum end tip can be removed from the EVO Race muffler for servicing with a fresh look. The sleek design of the EVO Race muffler provides plenty of clearance for the brake system when the swing arm is compressed. Professional testing and tuning gives the EVO Race system the ability to produce 4 - 8 additional horsepower on most models. Take your riding to the woods with the U.S.F.S. approved screen type removable spark arrestor. Big Gun builds the EVO Race Series exhaust in the U.S.A. and offers a 6 month warranty.