Piping Diameter: 2.5" (63.5mm) with dual 4" (101mm) tips
Flowmaster's American Thunder Catback Exhaust System is all mandrel bent 409s stainless steel system that delivers both sound and true performance. It is a full bolt on catback and fully emissions legal. Flowmaster includes their lifetime limited warranty for a lifetime of quality assurance and of course fully manufactured in the U.S.A. Although the brand of Flowmaster isn't really well known for imports or compact performance cars, they have been manufacturing exhausts for years and years and have tons of experience when it comes to making exhausts.
Check out how this exhaust sounds in the clip below: