Flowmaster American Thunder Exhaust System Cat Back 2-1/2" Tailpipe Steel - Aluminized 20-OTL-NG-S resulting in a better charge

resulting in a better charge available for combustion

10 in Diameter

XM Heavy Duty Shank Series

Using our AGM racing technology we have put a lot of power into a very small package

Flowmaster American Thunder Exhaust System Cat Back 2-1/2" Tailpipe Steel - Aluminized 20-OTL-NG-S resulting in a better chargeFor the person who is looking for a complete Cat back dual exhaust system with a moderate sound level. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. This America Thunder system delivers a moderate interior and exterior tone and is suited to the enthusiast who wants to hear the rumble of their truck. Like all Flowmaster systems, the benefits include improved throttle response,