Produce an aggressive engine tone outside, while reducing interior resonance with the Flowmaster Super 40 Series Muffler (2.50 inch In (D)/Out (D), Flo8525454). It is made of stainless steel and features the original 40 series design with Delta Flow technology. Mig-welded construction provides for durability and long-lasting service life. This stainless-steel muffler is easy to install and is compatible with a range of vehicle models.