Description
Overview
The Flowmaster American Thunder Cat-Back Exhaust System is engineered specifically for 2021-2023 Jeep Gladiator trucks equipped with the 3.0-liter diesel engine. Built from durable 409 stainless steel throughout, this complete cat-back system delivers a proven combination of improved exhaust flow, added off-road clearance, and an unmistakable aggressive-to-moderate tone that transforms the character of your diesel Gladiator.
At the heart of the design are 3.00-inch mandrel-bent pipes that promote better exhaust gas flow from the cat-back position rearward. On the dyno, this system produced maximum gains of 3 horsepower and 5 lb-ft of torque over stock, measured at the rear wheels, while the muffler-delete design frees up additional clearance underneath the truck for off-road driving.
Sound & Style
By removing the muffler, the American Thunder system delivers an aggressive to moderate sound level that gives your Gladiator diesel a stronger, more purposeful voice without overwhelming the cabin. The system finishes with a single 3.00-inch polished stainless steel tip featuring an embossed logo, adding a custom look and a clean, finished appearance at the rear of the truck.
Key Benefits
- Manufactured from durable 409 stainless steel throughout for long-lasting corrosion resistance
- 3.00-inch mandrel-bent pipes for improved exhaust gas flow
- Muffler-delete design adds off-road clearance and maximum performance
- Dyno-verified gains of 3 hp and 5 lb-ft over stock at the rear wheels
- Single 3.00-inch polished stainless steel tip with embossed logo for a custom look
- CARB (California) compliant with Emission Code 5
Bolt-On Installation
Designed as a true bolt-on upgrade, this system uses all of the existing factory hanger locations for a straightforward fit. Every kit includes detailed installation instructions and all the necessary hardware, making it an accessible at-home project for many owners. The muffler is included as part of the complete kit, so you receive everything needed to complete the cat-back upgrade in one package.
Fitment
This American Thunder cat-back exhaust is application-specific for the 2021-2023 Jeep Gladiator with the 3.0-liter diesel engine. As a CARB-compliant system, it is street-legal in California and carries Emission Code 5. Please note the included California Proposition 65 warning associated with this product.
Backed by Flowmaster’s Lifetime Limited Warranty, the American Thunder Cat-Back Exhaust System combines proven performance engineering, durable construction, and a distinctive polished tip to give your diesel Gladiator both the flow and the sound it deserves.
