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