Chambered round muffler, Made from 304 stainless steel for maximum corrosion resistance. Exclusive louvered core creates a sweet "Street Rod" deep tone that is not overly aggressive. On a 1-10, 10 being the loudest, these mufflers are an 8. Mufflers are sized so that they can be reversed for an even more aggressive sound. These are TIG welded for strength and durability. Exhaust systems are a great way to enhance the sounds of your vehichle while also gaining some extra horsepower. Changing the muffler on your car is a great way to adjust the back pressure and noise level of your vehicle. your can customize your vehicles performance and sound by replacing the factory muffler with an aftermarket muffler.