Dual aluminum mufflers. Stage 5 system that provides significant horsepower and torque gains. 304 stainless steel mid & head pipes. Fully Tig Welded. Includes oxygen sensor bung and USFS approved spark arrestors. Features 6061 Billet Muffler Clamps and 6061 Billet Machined Exhaust Tips. Made in the U.S.A..