Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is engineered for the driver who wants an aggressive exterior tone paired with a moderate, conversation-friendly interior sound. Built from heavy 16-gauge mandrel-bent aluminized steel tubing, this cat-back system is designed for lasting durability and maximum performance, delivering the deep, muscular note the American Thunder series is known for.
At the heart of the system is a Super 50 Series performance muffler (part #530562), tuned to strike the ideal balance between a bold exterior sound and a refined cabin experience. The result is a deep, aggressive rumble outside the truck without the drone that can drive you out of the cab when you’re trying to hold a conversation.
Key Benefits
With a 3.00-inch inlet diameter and dual 2.50-inch tailpipes, the American Thunder system is built to breathe and flow. The dual tailpipes are designed to clear the factory spare tire and give you two exit configurations: 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 finished with a pair of 3.00-inch highly polished 304 stainless steel tips embossed with the Flowmaster name for a clean, finished appearance.
- Heavy 16-gauge mandrel-bent aluminized steel construction for durability and flow
- Super 50 Series muffler (P/N 530562) for an aggressive exterior tone and moderate interior sound
- Dual 2.50-inch tailpipes that clear the factory spare tire
- Two exit options: straight-out-the-back dual look or side-exit for towing
- Dual 3.00-inch polished 304 stainless steel tips embossed with the Flowmaster name
- CARB (California) compliant with Emission Code 5
Installation & Fitment
Designed for an easy fit, the system includes all necessary parts, hardware, and instructions for a straightforward at-home installation. This is a bolt-on cat-back upgrade intended for 2WD applications, fitting standard cab / short bed models with a 119-inch wheelbase only. A muffler is included, while a heat shield is not.
The American Thunder Cat-back is covered by a 3-year Limited Warranty. For those who prefer full stainless steel construction backed by a Lifetime Limited Warranty, Flowmaster offers part #817435 as an alternative. This system carries a California Proposition 65 warning.
Whether you’re chasing a more commanding sound, a sharper look with polished stainless tips, or a towing-friendly side-exit layout, the Flowmaster American Thunder Cat-back Exhaust System delivers a proven combination of durable aluminized steel construction, Super 50 Series performance, and easy installation. Choose the exit configuration that best fits how you drive.
