Jones Turbine Muffler JT4040 Exhaust Muffler Stainless Steel 6.00 X 20.00 Turbine Style 4.00 Inch Inlet Jones Turbine muffler is designed to increase performance Highly Polished Stainless Steel Nice Throaty Sound Fits a 4.00 Inch Inlet and a 4.00 Outlet Exhaust Pipe