Patriot Exhaust H3018 Smithy's 30" Length 2-1/2" Inlet/Outlet Muffler The world's oldest performance muffler is now available for that "resto-rod" or your 1950's custom Get the muffler your dad used to impress his friends Guaranteed not to blow out or leak Double end cap construction and 3 1/2 inch hammertone finished cases assure the original Smithy look Limited one year warranty