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Kthnxbye Racing

Flowmaster American Thunder Axle Back Exhaust Kit | 2015-2018 Ford Mustang Ecoboost

Flowmaster American Thunder Axle Back Exhaust Kit | 2015-2018 Ford Mustang Ecoboost

Regular price $622.95
Regular price $693.00 Sale price $622.95
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Flowmaster 817748 Axle-back Exhaust Kit 15-18 Ford Mustang Base American Thunder

Flowmaster's American Thunder Axle-back exhaust system for the 2015-2018 Ford Mustang is perfect for the person looking for a moderately aggressive sound level outside of the car, while maintaining a mild sound level inside, 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 2.3L EcoBoost or 3.7L V6 engine features 3.00in inlet pipes that flow into a pair of Super 10 series mufflers for maximum performance. The system is built out of 409S stainless steel and utilizes 4.00in polished Stainless Steel Flowmaster embossed tips. The exhaust system 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.


  • Stainless Steel Construction
  • Dyno-Tuned for Maximum Performance
  • Chambered Super 10 Muffler Technology
  • Flowmaster Reliability


  • Material¬†Stainless Steel
  • Muffler Inlet Diameter (in)¬†3.0
  • Muffler Outlet Diameter (in)¬†3.0
  • Tip Style¬†Round, Double Wall, Polished, Angle Cut
  • Tip Diameter (in) 4.0
  • Piping Diameter (in) 3.0


  • 2015-2018 Ford Mustang Ecoboost¬†/ V6

What's In The Box?

  • (2) Axle Back Exhaust Pipes with Mufflers


  • Lifetime Limited Warranty


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