Flowmaster American Thunder Cat-Back Exhaust System - 3 in Diameter - Dual Side Exit - 3 in Polished Tips - Extended Cab - GM Fullsize Truck 1999-2006 Chromoly Tubing inspected and micropolished in the

inspected and micropolished in the U

Current products include: PowerStep™

Ford / Mazda / Volvo 2004-2018

A direct replacement for stock GM HEI Distributors

1970-1975 Ford E-100 Econoline

Flowmaster American Thunder Cat-Back Exhaust System - 3 in Diameter - Dual Side Exit - 3 in Polished Tips - Extended Cab - GM Fullsize Truck 1999-2006 Chromoly Tubing inspected and micropolished in theFor the person who wants the aggressive look of a NASCAR race truck along with all the benefits that a Flowmaster Cat back exhaust system provides. D. O. S. S. (Dual out same side) systems are the perfect choice. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power