Flowmaster 2018+ Ford Mustang GT 5.0L 409S SS American Thunder Axle-Back System w/ Quad Tips

Brand: Flowmaster

Product Code: 817799

Availability:In stock

Flowmaster's American Thunder® Axle-back exhaust system for the 2018 Ford Mustang GT is perfect for the person looking for a moderate to aggressive sound level both inside and outside of the car, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR (Dual Out Rear) emissions-legal system for cars with the 5.0L engine features a pair of Outlaw® Series mufflers and dual mandrel bent 3.00 inch tailpipes for maximum performance. The mufflers include functional exhaust valves to work with the OE actuator motors to select between sound levels.The system is built out of 409S stainless steel and utilizes Quad 4.00 inch polished stainless steel tips with the Flowmaster® logo embossed in them. This system fits vehicles equipped with Active Performance Exhaust Option. The exhaust system is manufactured in the USA and is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation. Note: This system fits hardtops and convertibles.

  • Stailess Steel Construction
  • Dyno Tuned for Maximum Performance
  • Aggressive Race Proven Outlaw® Mufflers
  • Works With Active Performance Exhaust Option


Application Summary
Fits 2018 Mustang GT Fastback with 5.0L V8 Engine. Fits Vehicles With Active Performance Exhaust Option

Note 1: Fits vehicles equipped with Active Performance Exhaust option


California Proposition 65 Information
WARNING: This product can expose you to chemicals including nickel (metallic) 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 go to www.p65warnings.ca.gov)