Take control of your F - 150's exhaust With a durable high - performance muffler, corrosion - resistant T - 304 stainless steel and high - flow mandrel bends, our ROUSH F - 150 Active Exhaust system uses ROUSH Performance valve technology to control your exhaust note and make your F150 stand out from the crowd. The included console - mounted selector switch seamlessly switches your exhaust between Open and Closed modes in the blink of an eye. ROUSH Performance recommends checking your local noise ordinance levels prior to purchase.