16-18 YAMAHA WOLVERINE700: Big Gun Exo Series Slip-On Exhaust (STEEL) The EXO Series is our largest, most durable and most powerful exhaust yet. Lightweight brushed aluminum muffler Hexagon shaped large diameter for more volume. Internal sound wavealtering technology. Stamped 304 stainless steel coned inlet for more volume TIG welded reinforced muffler bracket. 304 stainless steel mid pipe. Black powder coated stainless steel end tip Significant horsepower and torque gains. Removable screen-type spark arrestor included. Handmade in the USA Significant horsepower and torque gains. Removable screen-type spark arrestor included. Handmade in the USA. 1 Year Limited Manufacturers Warranty.