aFe (49-36603) 304 Stainless Steel Axle-Back Exhaust System with Polished Tip for Honda Civic L4 1.8L Polished 304 stainless steel high flow muffler 2.5 inches diameter 304 stainless steel 3.5 inches diameter slash cut double wall tip Manufactured and assembled in the USA 100 percentage hand TIG welded