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Flowmaster American Thunder Exhaust System

  • Regular Price: $366.75-1,544.25
  • Our Price: $248.97- 1,048.36
  • Shipping:FREE SHIPPING
  • Rating: (18)
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  • Get a loud, full volume sound with the Flowmaster American Thunder Exhaust System
  • 5-10% power gains, with a boost in MPG
  • Flowmaster Exhausts are built with Mandrel-bent pipes for maximum flow
  • Includes high-flow, low-drone chambered muffler
  • Built from Aluminized Steel for corrosion resistance
  • Flowmaster hardware and instructions included for easy installation
  • Many kits include stainless steel Flowmaster tip (s)
  • 3-Year Warranty

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.

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.

Flowmaster American Thunder Exhaust System Customer Reviews

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Overall Rating:

4.7 of 5

Average Install Time: 1-2 hours

Showing 10 of 18 reviews. See All Reviews.

who drives a Ford Mustang
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Haven't installed, lots of work left for installation of exhaust system, car is being worked from ground up, had mustang 49 years, bought ne ! I can say that everything looked great and had done some homework on this exhaust and liked what i have seen! Shipping was fast, just as good as any price on this system I have seen, happy for now! Had to pick how long it took to install and performance rating to submit my review, need to change that!

Install Time: 2+ Hours

who drives a Dodge Charger
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This is a great system... sounds awesome!!!! I would highly recommend this product.

Install Time: 1-2 hours

who drives a Dodge Challenger
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Car sounds great! It gives it that aggressive sound that is very satisfying.

Install Time: 1-2 hours

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Super easy to install. Everything was in the kit except for the tools. 5 stars.

Install Time: 30-60 minutes

who drives a Dodge Challenger
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I love them. They make my Challenger R/T actually sound like a hot rod now.

Install Time: 1-2 hours

who drives a Ford F-150
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Hardest part was cutting out the old exhaust. Looks and sounds great.

Install Time: 2+ Hours

who drives a Dodge Ram 1500
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Works great! Easy installation, only issue was the vague instruction manual. Sounds awesome. Gave my truck about 1.5 mpg more fuel economy.

Install Time: 1-2 hours

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Nice performance part. Had trouble with assembly pipes didn't fit muffler.

Install Time: 1-2 hours

who drives a Chevrolet Silverado Pickup
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Exhaust is perfect. Exactly what I expected. Fit perfect. Easy to install.

Install Time: 2+ Hours

who drives a Dodge Ram 2500
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It was a little more complicated to put on then I thought but overall a good choice

Install Time: 1-2 hours

Showing 10 of 18 reviews. See All Reviews.