Description
Overview
The Flowmaster American Thunder Exhaust System Kit is a custom-engineered catback exhaust built specifically for 2014-2019* (*Classic body) GM Silverado/Sierra 1500 trucks. Designed for drivers who want a moderate sound level inside the cab paired with an aggressive exterior tone, this Flowmaster exhaust system delivers the performance benefits you expect from the American Thunder series. It’s a true bolt-on performance exhaust that uses the factory hanger locations for a straightforward, direct-fit installation.
This complete exhaust system is designed for Crew Cab and Double Cab models equipped with the 4.3L or 5.3L engine. From the 3.00-inch inlet through stainless steel mandrel-bent tubing and into the proven Super 40 Series muffler, every component of this car exhaust is built to move air efficiently and sound great doing it.
Sound & Exit Options
When you shop for exhaust that matches your truck’s personality, exit configuration matters. This American Thunder kit comes with your choice of tailpipe exits: dual out the rear under the bumper, or dual out the sides behind the rear tires. Both configurations exit through dual 2.50-inch stainless steel mandrel-bent tailpipes and are finished off with a pair of large 3.50-inch polished stainless steel tips. Choose the configuration that best fits your truck and your style.
Key Benefits
- Aggressive exterior sound with a moderate in-cab sound level for comfortable daily driving
- Stainless steel mandrel-bent tubing for smooth, unrestricted flow
- Proven Super 40 Series muffler included for that signature Flowmaster tone
- Dual 2.50-inch stainless steel tailpipes with large 3.50-inch polished stainless steel tips
- Uses factory hanger locations for an easy, bolt-on fit
- Includes all necessary parts and hardware for installation
Fitment
This exhaust pipe kit is engineered for 2WD 2014-2019* (*Classic body) GM Silverado/Sierra 1500 Crew Cab and Double Cab trucks with the 4.3L or 5.3L engine. It is an emissions-legal, CARB (California) compliant system (Emission Code 5), making it a smart choice for owners who need a performance exhaust that keeps them street legal.
Whether you’re comparing a Borla exhaust, Corsa exhaust, MagnaFlow exhaust, or Walker exhaust, the Flowmaster American Thunder catback exhaust stands out for its blend of aggressive attitude, refined in-cab manners, and easy installation. Backed by Flowmaster’s Lifetime Limited Warranty, this exhaust system is the confident upgrade your Silverado or Sierra deserves.
Warning: This product carries a California Proposition 65 warning.
