Flowmaster American Thunder Single Exhaust System - 2004-08 Ford F-150/Lincoln Mark LT 4.6L/5.4L RS004C1913 7/16-14 in Male Thread

7/16-14 in Male Thread

Unit requires a 5" O

The deluxe arms have a more precise spring pocket for more consistent suspension geometry

2001-2013 Chevrolet Silverado 2500 HD

450 lph at 90 psi

Flowmaster American Thunder Single Exhaust System - 2004-08 Ford F-150/Lincoln Mark LT 4.6L/5.4L RS004C1913 7/16-14 in Male ThreadFor the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat back exhaust system provides. D. O. R. D. O. S. systems are the perfect choice, and include exit pipes for both dual out rear and dual out side configurations so that you can choose the one that fits your style. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants