The Flowmaster Force II system developed for the 2008-2012 Jeep Liberty features a Super 50 series muffler and mandrel-bent 2.50 in. piping, delivering a moderate performance tone outside with a mild interior sound level. A fully polished 3.50 in. stainless tip provides a great performance look to the system. Flowmaster®s lifetime limited warranty protects your investment and provides quality assurance.