American Thunder Axle-Back Exhaust System Fits 2007-2018 Jeep Wrangler Jk With 3.6L/3.8L, No Muffler - Flowmaster - 817942

The Flowmaster American Thunder Axle-back exhaust system for the 2007-2018 Jeep Wrangler JK is perfect for the enthusiast looking for maximum performance and ground clearance. The 2.50-inch tailpipe features a mandrel bent 409 stainless steel design for performance and corrosion resistance.

The tailpipe is finished off with a 3.00-inch polished 304 stainless steel tip and fits both 2 and 4 door models with the 3.6L or 3.8L engine. This system replaces the factory transverse muffler reducing weight, improves ground clearance, and provides a moderate sound level. Because this system tucks the tailpipe up high, an aftermarket metal bumper is generally recommended. The exhaust system is covered by our Lifetime Limited Warranty. Designed for a perfect fit, this system includes all necessary parts and hardware for easy and quick installation you can do at home in about 15 minutes.


Max Dyno Gains of 5 HP and 7 Lb.Ft. Torque

Provides Maximum Clearance for Off-Roading

Mandrel Bent Pipe Increases Exhaust Flow and Performance

Stainless Steel Construction Offers Great Corrosion Resistance

Utilizes the Factory Mounting Points for an Easy Installation

Moderate Sound Level

Backed by Flowmaster’s Lifetime Limited Warranty