Gibson Performance Exhaust 615621 Stainless Steel Single Side Exhaust System Features 3 inch mandrel bent heavy duty tubing with zinc plated factory style hangers, clamps and all hardware for easy bolt on installation Gibson's Superflow Performance muffler delivers the powerful "big block" sound with increased power and torque; all welded construction, baffled and chambered for better volume efficiency with unrestricted flow; no packing to blow out or deteriorate Exits behind rear tire Lifetime limited warranty