American Thunder Exhaust System GMC Sierra 2008

Make some space next to baseball, mom and apple pie: Flowmaster American Thunder Exhaust Systems belong on the list of beloved things that define the Red, White and Blue.

You don't just get some sound and a little power with Flowmaster's most popular kits—you get overwhelming horsepower gains, a handy boost in MPGs, and the most famous full-volume exhaust tone in the automotive world. Not to mention, each Flowmaster American Thunder Exhaust is custom-bent from quality aluminized steel to fit your specific year, make and model.

Best yet, Flowmaster American Thunder Exhausts give you configurations choices. Pick from single or dual kits, side or rear exits, or even specialty pipes made just for your ride. Each is powered by a renowned Flowmaster chambered muffler and comes with all the parts you need for a quick install.

Loud, powerful and uniquely American. Bolt-on your own American Thunder today!

Features

• The Flowmaster American Thunder Exhaust System is custom-crafted for your specific year, make and model
• Boldly blasts the famous Flowmaster tone at full volume
• Available in single or dual, rear or side exit configurations for most vehicles
• Immediately boosts power by 5% - 10% on average, and helps save gas
• Powered by one of Flowmaster's track-proven chambered mufflers
• Mandrel-bent exhaust pipes for restriction-free flow
• All aluminized steel construction fights corrosion
• Includes a full hardware kit and detailed instructions—most kits can be installed at home
• Stainless tip(s) included with many American Thunder Systems
• Made in the USA
• Your Flowmaster American Thunder Exhaust System is backed by a 3-year warranty