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Flowmaster American Thunder Exhaust System

There's no sound as uniquely American as that of a rumbling exhaust system. And there's no better way to get that awe-inspiring sound than by bolting on a Flowmaster American Thunder Exhaust System. With its mandrel-bent, free-flowing design and high-quality materials, the Flowmaster American Thunder is ready to sing - and bring the power.

The Flowmaster American Thunder Exhaust System is not just designed to give you all sound and no punch. With Flowmaster exhausts, you immediately feel 5-10% more horsepower and a few extra miles per gallon thrown in for good measure. The American Thunder boasts mandrel-bent pipes, chambered mufflers, and custom-engineered designs to achieve huge power gains while tuning in an aggressive, classic exhaust tone. Choose from single or dual exits, at rear or side locations for your Flowmaster exhaust.

Flowmaster American Thunder Exhaust System
Flowmaster American Thunder Exhaust System
Flowmaster American Thunder Exhaust System

Your Flowmaster American Thunder Exhaust System is made entirely with aluminized steel to stand up to rust, and even includes polished Stainless Steel tips for the finished look. Flowmaster, Inc. backs your Flowmaster American Thunder Exhaust System with a 3-Year Warranty.

Features

These American Thunder Flowmaster exhaust systems have been designed with the latest exhaust technology available. Through this technology, you will experience improvements in acceleration, passing power, and fuel mileage. The key to these performance improvements is Flowmaster's use of mandrel-bent tubing. The tubing allows for superior exhaust gas flow. These Flowmaster American Thunder exhaust systems also feature a muffler(s) that'll give you plenty of Flowmaster sound.

Flowmaster American Thunder Exhaust System
Flowmaster American Thunder Exhaust System

Constructed from mandrel bent 2.5" 16 gauge aluminized steel tubing for it's corrosion resistant properties the Flowmaster American Thunder catback features Super 44 Series chambered mufflers for that classic muscle car sound.

This Flowmaster American Thunder Catback exhaust system is designed specifically for the 1987 to 1993 GT Mustangs for both great a fit and great sound.

  • Available sound levels: Mild-Moderate Sound / Moderate Sound / Aggressive Sound /
  • Moderate-Aggressive Sound / Mild Sound (depends on application and exhaust type)
  • Increases Power
  • Increases Torque
  • Every System Tuned on Dynamometer
  • Perfect Fitment
  • Mandrel Bent Tubing