There is really no realistic way of ridding your internal combustion engine entirely of exhaust. No matter what you do, some exhaust must be expelled because of the laws of nature that allow this type of engine to even work. Your exhaust system is what helps to safely remove the exhaust from your vehicle so that it cannot accidentally seep into your driving compartment. A Roush muffler is an important part of the exhaust system. Every time that your exhaust valve opens, a loud burst of air occurs. Put the noise together of all of these bursts, and you get one loud vehicle. The muffler's job is to force the exhaust's air flow and force it through a series of reflections and baffles that mellow out the sound. A Roush muffler is made of stainless steel. This material is naturally resistant to rust and corrosion which means that it will last for a long time. Its high flow design minimizes any backflow and will noticeably increase your horsepower. This particular muffler gives your ride a very aggressive sound, yet it is still street legal. Use a quality Roush muffler on your ride. You will like the results that you get. All our customers always deserve terrific customer assistance when shopping for dependable parts for a car or truck. Thus, we created a twenty-four hour a day assistance desk to answer your needs. Everybody hates to pay for shipping, that's why we always provide completely free shipping for each order $50 and higher. If you spot a lower price elsewhere, give us a call - we will beat any price advertised elsewhere.