Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is built for the driver who wants a serious upgrade in tone and durability without turning every daily commute into an exercise in endurance. Constructed from heavy 16-gauge mandrel-bent stainless steel tubing, the American Thunder system delivers smooth, unrestricted flow while standing up to the elements for the long haul. It’s engineered to give you an aggressive exterior tone paired with a moderate interior tone — the kind of deep, confident sound that turns heads outside while keeping in-cab conversation comfortable.
Sound You Can Live With
At the heart of the system is a stainless steel Super 50 Series performance muffler, purpose-built to strike that perfect balance. Outside the vehicle, you get a deep, aggressive exhaust note. Inside, the tone stays moderate so it won’t drive you out of the cab on the highway. It’s the ideal answer for enthusiasts who want presence without drone.
Dual Exit Options
This cat-back system runs a 2.50-inch inlet diameter and finishes with dual 2.50-inch tailpipes that clear the factory spare tire. You get two exit configurations to match your build: straight out the back for a true dual look, or exiting out each side behind the rear wheels — an ideal setup for towing. The system is capped off with a pair of highly polished 3.00-inch 304 stainless steel tips, each embossed with the Flowmaster name.
Key Highlights
- Heavy 16-gauge mandrel-bent stainless steel construction for durability and maximum flow
- Stainless steel Super 50 Series performance muffler included in the kit
- Aggressive exterior tone with a moderate interior tone
- Dual 2.50-inch tailpipes that clear the factory spare tire
- Two exit choices — straight rear-exit or side-exit behind the rear wheels for towing
- Polished 3.00-inch 304 stainless steel tips embossed with the Flowmaster name
- CARB (California) compliant — Emission Code 5
Easy At-Home Installation
Designed for a straightforward, bolt-on fit, the American Thunder system includes all necessary parts, hardware, and instructions so you can complete the installation at home. It’s backed by Flowmaster’s Lifetime Limited Warranty for lasting peace of mind. If you prefer full aluminized steel construction covered by a 3-year Limited Warranty, look to part# 17471 instead.
Fitment
This system is designed to fit 2/4 wheel drive models and all wheelbases. Please note this product carries a California Proposition 65 warning. As with any exhaust upgrade, confirm compatibility with your specific vehicle before ordering to ensure the correct configuration for your application.
