The Screamer. A dual mode muffler with a single inlet with a dual outlet. One outlet is a straight pipe with a valve at the end on a 360 degree floating flange for total adjustability. When the valve is open you get the loud and free flowing exhaust system. Close the valve and the exhaust gases are diverted through the muffled section to get the quiet mild mannered sound. This is the only system out there that can give you exactly what you want, when you want it. Do you have any questions about your Jeep Grand Cherokee Exhaust? Do you have concern about installation or fitment? Contact us.