Flowmaster 817680: 817680 American Thunder Cat-Back Exhaust System 2009-2013 GM Silverado/Sierra 1500 5.3L Flex Fuel V8
GM
American Thunder Cat-Back Exhaust System 2009-2013 GM Silverado/Sierra 1500 5.3L Flex Fuel V8 (Crew/Extra Cab) 2.5" Tubing 3.5" Polished SS Tips Dual Rear/Side Exit Super 40 Series Muffler 409S Stainless Steel