With thirty-five years of experience, Flowmaster has specialized in automotive science and various patent protecting technologies. Ushering a new standard, the brand has shown a revolutionary development in the past few decades. The brand has an aim to design the best automotive products, delivering high-end performance. The highest quality of exhaust products, advanced manufacturing techniques and unwavering dedication toward customers are what set this brand apart from others. Flowmaster Performance has embraced innovative technologies to improve its product line. From its FlowFx straight-through design to legendry chambered, every product delivers outstanding performance.
Flowmaster's race-oriented American Thunder Extreme Cat-back system is designed to mount behind the factory catalytic converters, or most OEM style aftermarket H-pipes. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions.These systems are mandrel bent for maximum performance and include Super 44 series mufflers. This American Thunder Extreme system delivers a super aggressive interior and exterior tone and is suited to the enthusiast who wants the most aggressive components they can purchase. Like all Flowmaster systems, the benefits include improved throttle response and power. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.
- Fits with most modified suspensions.
- Stainless Steel Construction.
- Patented Delta Flow technology.
- Lifetime limited warranty.
Cat-back System 409S - DOD Exit - American Thunder Extreme - Aggressive Sound.
Fits 1986 to 2004 Ford Mustang, GT, LX, and Cobra models with a 4.6L or 5.0L V8 engine. Professional installation by a licensed mechanic required.
Fitment & Application:
|Shipping Method||UPS/FedEx/USPS Ground|
|Availability||Possibly special-order. Call or email to check stock.|
|California Prop 65 Warning||
This product can expose you to chemicals including lead and chromium (hexavalent compounds) which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov