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Home  /Performance  /Exhausts & Mufflers  /Exhaust Systems  /Flowmaster American Thunder Exhaust System

Flowmaster American Thunder Exhaust System

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List Price:$153.00 - $1,337.00
Our Price:$136.95 - $1,202.95
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  • description
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  • reviews
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description

  • Available in T-409 stainless steel and 16-gauge aluminized steel
  • Mandrel bent tubing for maximum flow
  • Tested and proven on dyno to increase performance
  • Louder than stock with a throaty rumble
  • No drilling or welding on most models
  • Stainless steel exhaust tips constructed of T-304 stainless
  • Limited lifetime warranty
  • Made in the USA - Santa Rosa, CA

Let's face it you love your truck or muscle car and you want it to be noticed and running at its best. Flowmaster American Thunder exhaust systems are one of the best out there with a great sound and power enhancing performance.

Everyone wants their exhaust to sound great, but first things first – it has to boost your engine's performance. Flowmaster exhaust systems are going to allow your engine to more easily emit exhaust fumes by optimizing the travel from engine to tip. Reduce back-pressure and you boost power. Boost power and you go faster.

How does Flowmaster create such great sound from their exhaust kits you ask? The sound is created by a muffler that is manufactured for not just that great "Flowmaster Sound" but for optimal power and mileage. Every exhaust is perfectly designed to work the best with your ride.

The Flowmaster American Thunder exhaust systems come with an aggressive sound. Tubing is constructed out of 16-gauge stainless steel. Each truck and car exhaust system is mandrel bent for an even flow and exit. Flowmaster exhaust systems come complete with muffler, hangers, clamps and tip for easier installation.

Customize your car, truck, or SUV the way you want with application offering a single or dual exit exhaust kit. So what are you waiting for? Get yourself the Flowmaster American Thunder exhaust system today!

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BRANDFlowmaster
California Residents: Prop 65 Warning

videos

2014-19* GM Silverado/Sierra 1500 4.3L, 5.3L - American Thunder Cat-back Exhaust System 817669
2014-19* GM Silverado/Sierra 1500 4.3L, 5.3L - American Thunder Cat-back Exhaust System 817669
01:38
2011-18 GM Silverado/Sierra 1500 6.2L - American Thunder Cat-back Exhaust System 817602
2011-18 GM Silverado/Sierra 1500 6.2L - American Thunder Cat-back Exhaust System 817602
00:54
2015-20 Ford F150 3.5L Ecoboost - American Thunder Cat-back Exhaust System  817725
2015-20 Ford F150 3.5L Ecoboost - American Thunder Cat-back Exhaust System 817725
00:51
2015-20 Ford F150 3.5L TiVCT - American Thunder Cat-back Exhaust System 817725
2015-20 Ford F150 3.5L TiVCT - American Thunder Cat-back Exhaust System 817725
00:53
2009-20 Toyota Tundra 4.6L, 5.7L - American Thunder Cat-back Exhaust System 817664
2009-20 Toyota Tundra 4.6L, 5.7L - American Thunder Cat-back Exhaust System 817664
01:10
2003-12 Dodge/RAM 2500, 3500 5.7L - American Thunder Cat-back Exhaust System 817507
2003-12 Dodge/RAM 2500, 3500 5.7L - American Thunder Cat-back Exhaust System 817507
00:39
2009-14 Ford F-150 All V8 engines - American Thunder Cat-back Exhaust System 817567
2009-14 Ford F-150 All V8 engines - American Thunder Cat-back Exhaust System 817567
00:42
2014-20 RAM 2500 6.4L - American Thunder Cat-back Exhaust System 817709
2014-20 RAM 2500 6.4L - American Thunder Cat-back Exhaust System 817709
00:54
2016-20 Toyota Tacoma 3.5L, American Thunder Exhaust System - 817719
2016-20 Toyota Tacoma 3.5L, American Thunder Exhaust System - 817719
00:42
2010-14 Ford F-150 SVT Raptor 6.2L - American Thunder Cat-back Exhaust 817551
2010-14 Ford F-150 SVT Raptor 6.2L - American Thunder Cat-back Exhaust 817551
01:02
2013-15 Toyota Tacoma 4.0L, American Thunder Exhaust System - 817614
2013-15 Toyota Tacoma 4.0L, American Thunder Exhaust System - 817614
01:01
2007-13 GM Silverado/Sierra 1500 5.3L - American Thunder Cat-back Exhaust 817680
2007-13 GM Silverado/Sierra 1500 5.3L - American Thunder Cat-back Exhaust 817680
01:10
2011-19 GM Silverado/Sierra 2500, 3500HD - American Thunder Cat-back System 817541
2011-19 GM Silverado/Sierra 2500, 3500HD - American Thunder Cat-back System 817541
01:24

install

Flowmaster American Thunder exhaust systems can be installed right at home, if you've got the right tools and equipment. All orders include installation instructions, and those are also available on our website. Welding may be required on some exhaust systems. For additional information please call our customer service team.

How to Install Flowmaster American Thunder Cat-Back Exhaust System for 2019-20 Chevy / GMC 1500
09:13

warranty

Flowmaster is offering a lifetime limited warranty on their stainless steel exhaust systems and a 3 year limited warranty on the aluminized steel exhausts. The warranty protects you against manufacturing defects in material and workmanship. If you have any questions please call our customer service team.

reviews

Q&A