Pypes Exhaust Systems are designed to deliver enhanced performance, provide extra punch in the passing lane and improve gas mileage. Fabricated using the highest quality materials, our smooth, seam-coated, 16 gauge, mandrel-bent, 409 stainless steel pipe ensures maximum exhaust gas flow, which can significantly boost horsepower. The stainless construction material of our pipes and mufflers enables them to resist corrosion and extends the life of the system. Our mufflers are precision matched to deliver the ultimate in sound and performance. These truck systems come complete with a precision matched Pypes Violator Muffler (for maximum flow, a great tone that's not too quiet and not too obnoxious).