Description
Overview
The Flowmaster Chevrolet, Pontiac (5.7) Exhaust System Kit is built for the enthusiast who wants the classic look of a traditional dual exhaust with all the performance benefits of a genuine Flowmaster cat-back exhaust system. Part of the acclaimed American Thunder series, this catback exhaust pairs a 3.00-inch mandrel-bent aluminized steel inlet tube with the 80 Series Cross-flow performance muffler to deliver a deep, powerful voice that lets your 5.7L make itself heard.
Engineered as a complete exhaust system, this kit flows through dual 2.50-inch mandrel-bent tailpipes that exit out the back for a muscular stance and sound. When you shop for exhaust upgrades that combine bold aesthetics with real gains, this performance exhaust delivers moderate-to-aggressive exterior tone with a mild-to-moderate interior tone — aggressive without being overbearing on the highway.
Key Benefits
Like all Flowmaster exhaust systems, this cat-back setup is designed to improve throttle response, power, and mileage. The mandrel-bent tubing keeps flow smooth and unrestricted from the inlet all the way through the exhaust pipe and out the dual tailpipes, while the 80 Series Cross-flow muffler (part number 43083) provides that signature deep tone Flowmaster is known for.
- American Thunder series dual-out cat-back exhaust system for a traditional dual exhaust look
- 3.00-inch mandrel-bent aluminized steel inlet tube for smooth, high-velocity flow
- 80 Series Cross-flow performance muffler included (Muffler P/N 43083) for a deep, powerful sound
- Dual 2.50-inch mandrel-bent tailpipes exiting out the back for a muscular exhaust pipe profile
- Aggressive exterior tone with a mild-to-moderate interior tone
- CARB (California) compliant — Emission Code 5
- Silver pipe finish with U-Bolt clamping hardware included
Installation & Fitment
This system is designed for an easy fit on 2WD applications, using the factory hanger locations for a straightforward, bolt-on installation. Every kit includes all necessary parts and hardware, with U-Bolt clamping to secure the connections. Muffler is included; exhaust tips are sold separately, and no heat shield is included, so you can outfit the system to match your build.
Whether you’re searching for a Flowmaster car exhaust that turns heads or simply want a proven catback exhaust that improves how your 5.7 breathes, this American Thunder exhaust system covers the essentials. It backs its performance with Flowmaster’s 3-year Limited Warranty, giving you confidence in both the sound and the build quality. Choose this configuration to get the aggressive tone, dual-tailpipe styling, and flow-focused engineering that make Flowmaster a benchmark in performance exhaust.
