Description
Overview
The Flowmaster Chevrolet, Pontiac (5.7) Exhaust System Kit delivers the classic dual exhaust look paired with the real-world performance you expect from a Flowmaster cat-back exhaust system. Built around the popular American Thunder series, this complete exhaust system is engineered for the 5.7L enthusiast who wants a deeper, more purposeful voice from their car exhaust without sacrificing everyday drivability. If you’ve been searching to shop for exhaust upgrades that combine bold styling with proven flow, this catback exhaust hits the mark.
At its core is a 3.00-inch mandrel-bent aluminized steel flanged inlet tube that feeds directly into the 80 Series Cross-flow performance muffler (part number 43083). Mandrel bends keep the exhaust pipe diameter consistent through every curve, promoting smooth flow for improved throttle response, power, and mileage. From the muffler, dual 2.50-inch mandrel-bent tailpipes exit out the back for a muscular stance and an unmistakable presence.
Sound & Performance
American Thunder systems are tuned to deliver a moderate-to-aggressive exterior tone with a mild-to-moderate interior tone. That means a deep, powerful sound outside the vehicle while keeping the cabin comfortable on the highway. This is a performance exhaust built for the driver who wants their engine to be heard, positioned right alongside other enthusiast favorites like Borla exhaust, Corsa exhaust, and MagnaFlow exhaust setups.
Key Highlights
- American Thunder series dual-out cat-back exhaust system for Chevrolet and Pontiac 5.7 applications (2WD)
- 3.00-inch mandrel-bent aluminized steel flanged inlet tube for smooth, consistent flow
- 80 Series Cross-flow performance muffler (P/N 43083) included for a deep, powerful tone
- Dual 2.50-inch mandrel-bent tailpipes for a muscular look and aggressive sound
- Silver pipe finish with U-Bolt clamping and factory hanger locations for easy installation
- CARB (California) compliant, Emission Code 5
Easy, Bolt-On Installation
This kit is designed for a straightforward fit. It uses the factory hanger locations and includes all necessary parts and hardware, with U-Bolt clamping to get you dialed in. The muffler is included, while exhaust tips are sold separately so you can finish the exhaust pipe exactly how you want. Note that a heat shield is not included with this system.
Fitment
Engineered for Chevrolet and Pontiac 5.7L 2WD vehicles, this dual-tailpipe exhaust system is CARB compliant (Emission Code 5), making it a smart choice for enthusiasts in California and beyond. Whether you’re comparing Walker exhaust, PE exhaust, or other performance exhaust options, this Flowmaster kit offers a complete, ready-to-install package.
Every Flowmaster system is backed by a 3-year Limited Warranty, so you can upgrade your car exhaust with confidence.
