Don't let the looks of this muffler fool you. Although at idle, you may cause passengers to immediately reach for their seat belts, upon acceleration, a smooth authoritative tone turns apprehension into a reassuring confidence. This is a great street/strip muffler that will maintain its rich sound qualities for the life of the muffler because there is no filler to burn off. Recommended for stock to medium modified vehicles where an aggressive sound is appreciated but not advertised. Designed with acoustics in mind, these resonance chambers create the unique sound of this muffler and keep it that way for years to come. The welded case makes for a sturdy muffler that will not rattle. The aluminizing and seam-coating treatment of our mufflers enables them to resist corrosion and extends the lifespan of the product, while their superior flow improves gas mileage. Pypes mufflers, when used as a Pypes system component, can be precision matched to deliver the ultimate in sound and performance.