Flowmaster American Thunder Axle Back Exhaust
Replace the restrictive stock axle back exhaust on your 2013-2014 Mustang GT with this American Thunder Series axle back exhaust kit from Flowmaster! Featuring Flowmaster's Super 44 Series mufflers that are sure to give your 5.0L coyote a deep, throaty tone that will keep a smile on your face every time you hear it! When installing this axle back kit you will not only gain a better sound, but an increase in horsepower and torque as well!
High Quality Construction
Manufactured of T409 stainless steel, this durable axle back is guaranteed to last and is backed by Flowmaster's lifetime limited warranty. Flowmaster built this kit using 3" tubing paired with 4" polished tips for an amazing look coming out the rear of your 2013-2014 Mustang GT!
2011 5.0 Mustang Flowmaster American Thunder Axleback
How To Properly Install Exhaust Band Clamp
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Published on 2013-10-22 The Ford Mustang 5.0 liter engine is back and delivers an incredible 412 Camaro-smokin' horsepower. To match the factory's re-issue of the famous 5.0 liter nameplate, Flowmaster set about re-engineering their American Thunder Exhaust System to deliver that classic 5.0L sound along with additional fuel mileage and power. Stainless steel mandrel bent tubing, polished 4"tips, easy clamp-on installation and a Flowmaster 10-year warranty!
Just received this exhaust today for my 14 GT convertible. i listened to so many sound clips of so many exhaust and took a chance on this one. I was not disappointed. It is so much deeper in person than any sound clip i heard. it is the classic flowmaster I was wanting. My 5.0 now sounds like a bad boy muscle car, as it should. It is deep and not raspy at all. Stop listening to sound clips they just dont do it justice. just buy and enjoy.
Yes, I would recommend this item to a friend!
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Bryan R. on
Bought these about 3 weeks ago before I took delivery of my car. I've always loved a flowmaster sound. Normally, the American Thunder series has a 40-Series muffler which sound hollow, but good. These 60-Series muffler give a perfect deep, muscle sound. There is very little drone while cruising on the highway. They're tame, but loud. What I mean is that when you fire the car up, you know they're there. When you're idling, there is a nice hum and when you rip on it, it sounds like the 7th ring of hell has been opened. Highly recommend these.
Flowmaster - The Exhaust Technology Company Flowmaster operates the only exhaust Research & Design facilities of its kind in the world, centered around the SuperFlow SF-7100 engine dynamometer complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dyno's.
Through use of these dyno's, Flowmaster's engineering staff can track the complete engine cycle in millionths of a second and can obtain exact technical data of each degree of cam rotation, from induction to the tip of the exhaust system, while also showing the power numbers that really matter, the power numbers "to the ground."
Flowmaster also utilizes Spectrum Analyzers to fine "tune" the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones. Flowmaster's dedication to quality is what makes them the exhaust industry leader for Latemodel Mustangs and SVT Lightnings!