The classic sound of a Flowmaster chambered exhaust, our American Thunder Series features mufflers tuned to deliver more power, torque, throttle response and mileage. Best of all, these exhaust systems take sedate vehicles and delivers a deep aggressive tone.
I was very nervous about purchasing a new exhaust system for my 2011 JK Six Speed manual. I Did a lot of research and this system the American Thunder series fit all categories for me. I spent it and now I'm *#!$ing enjoying it.. 100% worth the money, felt a Huge power increase right after install. Throttle feed was much more sensitive to what stock offered so I could feel the jeep going up hills faster in 4th gear requiring lest RPM then stock.. THE SOUND... Was just what I wanted giving the Jeep some attitude on the road and that minuscule satisfaction of grumble I love as my everyday driver..
Easy install, great sound. Not too loud, but not quiet either. Got rid of the muffler which was getting roughed up on rocks.
Used this to replace a banks system that had developed a internal rattle in the muffler, sounds lower and not overly loud but not too quiet. Best routing of a cat back system I’ve seen, everything kept above frame rails
will 4WD install this exhaust on to my Jeep and if so how much? Would it affect my warranty?
Asked by Austin from Lakeland, Fl on
Austin, the Flowmaster Exhaust American Thunder Cat Back Exhaust System can be installed at our stores, but you will have to call your local store for rates. Thanks for the question!
Answered by Sara H. Ext 4874 from Lakeland, Fl on
For over 30 years, Flowmaster has been producing exhaust products to combat noise issues that first cropped up on race tracks in California. The question was how to reduce sound without compromising performance? Advanced engineering and ample testing set Flowmaster's product line apart from competitors and a few of their more noteworthy parts include chambered mufflers, laminar flow designs and high flow catalytic converters. We carry Jeep exhaust pipes, exhaust flanges and complete exhaust systems among other Flowmaster products. The company's patented technologies, innovative designs and focus on performance keep Flowmaster at the forefront of aftermarket exhaust manufacturers. Shop Flowmaster Exhaust Now