Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is engineered to transform your truck’s exhaust note and flow with a proven combination of Flowmaster performance components. Built around the renowned 50 Series HD muffler, this complete cat-back kit delivers an aggressive yet moderate tone that sounds serious under throttle while staying comfortable for everyday driving. If you want a bolt-on upgrade that looks and sounds the part, the American Thunder series is a benchmark name in performance exhaust.
Key Benefits
At the heart of the system is the 50 Series HD muffler, a black-finished, 24.00-inch overall length unit featuring a center inlet and dual outlet configuration with a 3.00-inch outlet diameter. The dual tail pipe layout gives your rig a purposeful stance and a fuller, more aggressive sound profile. The silver pipes provide a clean, durable appearance under the truck, and the embossed tip logo adds a finished, factory-plus look at the bumper.
Installation is designed to be straightforward because the system uses your factory hangers, so it drops into the original mounting locations without the guesswork of relocating brackets. This is a true cat-back setup, meaning it replaces the exhaust from the catalytic converter back and includes the muffler in the kit.
Highlights
- Flowmaster American Thunder series cat-back exhaust with the muffler included
- 50 Series HD muffler, black finish, 24.00-inch overall length, center inlet
- Dual tail pipe configuration with dual 3.00-inch outlets for an aggressive, purposeful look
- Silver pipe finish with an embossed tip logo for a clean, finished appearance
- Uses factory hangers for a direct, straightforward installation
- CARB (California) compliant with Emission Code 5
Sound & Performance
The 50 Series HD muffler is known for producing a deep, aggressive tone that is still moderate enough for daily use, striking the balance many truck owners are after. Whether you’re cruising the highway or hauling, this system helps your engine breathe with a dual-outlet exhaust path and a bold sound signature that stands apart from a stock setup.
Fitment
This kit fits Crew Cab configurations with a 6.5-foot bed length and a 159-inch wheelbase only. It will not fit models with a 5th wheel tow hitch installed, so confirm your truck’s bed length, wheelbase, and hitch setup before ordering. A heat shield is not included with this system.
Warning: This product carries a California Proposition 65 notice. The system is CARB (California) compliant, making it a street-legal choice where emissions compliance matters. Backed by the trusted Flowmaster name, the American Thunder cat-back is a comprehensive, ready-to-install upgrade for owners who want more sound, more style, and a proven performance pedigree.
