Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is built for the enthusiast who wants the classic look of a traditional dual exhaust with all the performance advantages of a Flowmaster cat-back. This dual-out system connects directly to your catalytic converters using a 2.50-inch flanged pipe, then routes mandrel-bent aluminized steel inlet tubes into large-case Super 40 Series performance mufflers for a deep, powerful sound that lets your performance be heard.
American Thunder systems are tuned to deliver a moderate to aggressive exterior tone paired with a mild-to-moderate interior tone — the sweet spot for drivers who want serious presence at wide-open throttle without an overwhelming drone inside the cabin. From behind, dual 2.50-inch mandrel-bent tailpipes exit out the rear and are capped with dual 3.00-inch polished stainless steel tips for a muscular, finished look.
Key Benefits
Like all Flowmaster systems, this American Thunder cat-back is engineered to improve throttle response, power, and mileage. Mandrel-bent tubing maintains a smooth, consistent diameter throughout the system to promote strong exhaust flow, while the Super 40 Series muffler provides that signature aggressive Flowmaster tone.
- 2.50-inch flanged inlet pipe that bolts directly to the catalytic converters
- Mandrel-bent aluminized steel inlet tubes for smooth, efficient flow
- Large-case Super 40 Series performance mufflers included in the kit
- Dual 2.50-inch mandrel-bent tailpipes exiting out the back
- Dual 3.00-inch polished stainless steel tips for a muscular finished look
- Moderate-to-aggressive exterior tone with a mild-to-moderate interior tone
- CARB (California) compliant, Emission Code 5
Easy, Bolt-On Installation
Designed for a straightforward fit, the system uses the factory hanger locations so it drops into place with minimal fuss. Everything needed comes in the box — the kit includes all necessary parts and hardware for an easy installation, so you can spend less time under the vehicle and more time enjoying the sound and performance.
Fitment & Specifications
This is a 2WD application in the Exhaust and Tail Pipes category, part of Flowmaster’s American Thunder exhaust series. It features a 2.50-inch inlet diameter, dual tailpipe configuration, and a silver pipe finish, with the Super 40 Series muffler included as part of the kit. Please note a heat shield is not included. This product carries a California Proposition 65 warning.
Warranty
The American Thunder cat-back is backed by Flowmaster’s 3-year Limited Warranty. If you prefer a full stainless steel exhaust system with a Lifetime Limited Warranty, consider stepping up to Flowmaster’s stainless offering.
