Gibson Performance Exhaust 619010 Stainless Steel Axle Back Exhaust System Manufactured using high quality stainless steel, 2.5 inch mandrel-bent tubing with zinc plated factory style hangers, clamps and all necessary hardware for easy bolt on installation Gibson's superflow performance muffler delivers the powerful "big block" sound with increased power and torque 4 inch polished T304 stainless steel round slash cut intercooled tips Exit is straight out the back Lifetime limited warranty