Gibson's exhaust systems are designed and dyno tuned to get the most horsepower out of your vehicle. Hassle free, bolt-on installation with professional looking results. No welding required and available in aluminized or stainless steel. Features Gibson's superflow mufflers, 2.25 inches tubing, 4 inches dual wall tips and 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 4 inches polished T304 stainless steel round double wall slash cut tips Exit is straight out the back Lifetime limited warranty