Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is engineered for the 2019-2023 GM Silverado/Sierra 1500 (new body style) equipped with the 6.2L engine and factory dual exhaust. Built for the driver who wants an aggressive sound outside the truck paired with a moderate tone inside the cab, this dual cat-back system delivers the performance character and unmistakable presence that the American Thunder name is known for. It’s a true bolt-on upgrade that uses your factory hangers, so it installs cleanly without cutting or fabricating.
At the heart of the system is a single 50 Series HD muffler, fed by a mandrel-bent 3.50-inch stainless steel inlet tube for smooth, high-flow exhaust routing. From there, dual 2.50-inch mandrel-bent stainless tailpipes replace the factory resonators to unlock a deeper, more purposeful growl. The tailpipes finish with quad 4.00-inch black ceramic coated stainless steel tips that exit in place of the factory bolt-on exhaust bezels, giving your truck an aggressive performance stance that sets it apart.
Key Benefits
This is more than a sound upgrade. The mandrel-bent stainless construction is designed to flow better than the restrictive factory setup, delivering the performance benefits you expect from Flowmaster while adding the kind of attitude that turns heads. The aggressive exterior tone lets everyone know your truck is built to lead rather than follow, while the moderate interior sound keeps highway drives comfortable.
- Mandrel-bent 3.50-inch stainless steel inlet tube for smooth, high-flow routing
- Single 50 Series HD muffler tuned for aggressive exterior sound and a moderate cabin tone
- Dual 2.50-inch mandrel-bent stainless tailpipes that replace the factory resonators for added growl
- Quad 4.00-inch black ceramic coated stainless steel tips that exit through the factory bezel locations
- Uses factory hangers for a clean, no-fuss fit
- CARB compliant and emissions-legal (Emission Code 5)
Installation & Fitment
Designed for an easy at-home installation, the system includes all necessary parts, detailed instructions, and hardware. Because it mounts to the factory hangers and the tips exit in place of the factory bolt-on exhaust bezels, most owners can complete the swap in the driveway with basic tools.
This cat-back fits all 6.2L Crew Cab models with 5.5-ft and 6.5-ft beds, as well as all Double Cab models with a 6.5-ft bed, provided the truck is equipped with factory dual exhaust tailpipes. Confirm your engine, cab, bed length, and factory dual exhaust configuration before ordering to ensure a proper fit.
Why Choose American Thunder
With its aggressive exterior sound, refined interior tone, durable stainless construction, and standout black ceramic coated tips, the American Thunder system is the complete package for Silverado and Sierra owners who want performance and style backed by the Flowmaster name.
