In recent years, the noises emitted from cars and trucks have become smothered and silenced. The once snarling and guttural notes produced by high-output V8s has been reduced to quiet, unenthused hums; but now, you don't have to settle! Boost your ride's decibels with a Flowmaster American Thunder Exhaust System, retrofitting that classic Flowmaster sound to your Truck, Jeep, or SUV. Flowmaster's American Thunder Exhaust Systems aren't only focused on producing a respectable exhaust note, though it's certainly a driving force. Flowmaster packs dyno-proven performance in every American Thunder Exhaust System, featuring large-diameter mandrel-bent piping, high-flow mufflers, and minimal restriction. The result? More power! American Thunder Exhaust Systems are offered in your choice of durable aluminized steel or premium stainless steel, providing exceptional corrosion resistance in either configuration. | Flowmaster American Thunder Exhaust System 817674