(approx) 1 Hour
Light to Moderate mechanical skill required.
- Customer Submitted:
- How to Install Axle-Back Exhaust on Your 2005-2009 V6 Mustang
Features, Description, Reviews, Q&A, Specs & Installation
Technical Note. Americanmuscle recommends adding the 2005+ Mustang 304 Stainless Steel Exhaust Hanger Kit from the drop down option above, to provide more strength, stability and a cleaner installed appearance. If you have a 2007 Mustang you may need the kit for correct installation.
Fitment: 2005 2006 2007 2008 2009 Details
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
September 05, 2019
Great tone but still a v6
This exhaust sounds great and a must have. Adds a lot of volume and a lot of tone. Loud when you want it to be, or can sound stock. It does have a trumpet type sound occationally, usually right after a cold start. Sounds great but you’re not fooling anyone, sounds like a v6 not a v8.Helpful (1)
March 22, 2019
Just had this muffler installed on my 2005 mustang convertible v6. It sounds great! It has a nice deep sound to it. It's not real loud at idle but when you give it gas it's got great sound. It sounds similar to a v8. I usually do all the work on our cars but I just had surgery so I had a muffler shop do it. They charged me 120 which I think was overpriced.Helpful (1)
March 19, 2019
I was looking for something to spice up my car, that wouldn’t be an entire project. Found axel back exhausts and was intrigued. I watched tons of videos on the sound of each style, the installation, and comparison. I landed on the American Thunder from Flowmaster and I was not disappointed in the slightest. I love the way this has made my car sound. Completely stock, but it sounds so much better than the stock muffler it comes with. I highly recommend this.Helpful (1)
January 27, 2019
Muffler arrived quickly and and packed in foam, and supplied with a good quality clamp. Installation was easy and everything lined up well. Sounds good without excessive volume. Good product.Helpful (1)
January 10, 2019
Installing this took no time at all. It sounds and looks great.Helpful (2)
December 18, 2018
I like it
It has a nice sound. It’s not to pound when you’re idle. Reving has a very nice sound too.Helpful (2)
November 19, 2018
Installed in less than an hour. Love the sound flow it brings to my mustang.Helpful (2)
October 25, 2018
I’ve had a Flowmaster exhaust on a previous vehicle I owned and know the quality, fit and finish of their products. This one did not disappoint. Now my V6 has that undeniable Flowmaster sound. I would highly recommend this product.Helpful (2)
September 25, 2018
Did not take long. Hardest part was removing the old muffler.Helpful (2)
September 13, 2018
Sounds great! Not too loud but loud enough to turn some heads...Helpful (2)
I bought my mustang with this already installed, is there a way to make it more aggressive and louder sounding without totally replacing it?
There is no way to modify the sound of the exhaust directly, other performance parts would have to be added to the vehicle to change the volume/tone.
Is there any Horsepower gained compared to a stock V6?
There really would not be any horsepower gain with these. At most you may see a gain of 1-2 horsepower.
My mustang is straight piped and I had a piece of pipe welded where my muffler used to be. Will I still be able to install this product?
A significant amount ofalteration would be needed to install this item due to your existing modifications.
Will this muffler cause an emissions test failure?
This will not cause any emission test failures no.
I have a 2005 mustang and was wondering how do I install it??? Do I have to weld it??? Or what? Tia
The Flowmaster American Thunder Axle-Back Exhaust will simply clamp on to your exhaust. More details can be found in the install guide, linked below: https://lib.americanmuscle.com/files/18404-18419-40037-48021-29000-cust.pdf
Flowmaster does have a video for their American Thunder Axle-Back Exhaust directly on their website, which I will link below: www.flowmastermufflers.com/exhaust-sytems/17421-axle-back-system-single-rear-exit-american-thunder-moderate-sound/
The Flowmaster American Thunder Axle-Back Exhaust will have some cabin noise. It will absolutely sound great on your 05-09 V6.
It is still recommended to replace the hangers at the same time as there are more than one, it is not needed but is recommended.
The Flowmaster American Thunder Axle-Back Exhaust is designed specifically for the 2005-2009 Mustang V^ and will not fit a 2004.
This Flowmaster American Thunder Axle-Back exhaust system is designed to fit the 2005-2009 4.0L V6 Mustangs for both great looks and great sound. No further parts would be need to install this axel back.
Hello! The Flowmaster American Thunder Axle-Back Exhaust, and axle backs in general, should not increase or decrease horsepower. If you are experiencing a great decrease in power you should consult a mechanic.
Hello! Unfortunately, we do not sell just the left side of the Flowmaster American Thunder Axle-Back Exhaust.
A tune is not required for installation of this axleback exhaust.
This kit will only come with one muffler, it cannot be made into a dual exhaust kit. To convert your V6 to dual exhaust you will want to purchase the Flowmaster Force II True Dual Cat-Back Exhaust Item #18466 (http://www.americanmuscle.com/flowmaster-forceii-catback-0509v6.html)
The Flowmaster American Thunder Axle-Back Exhaust (05-09 V6) will work amazing with a set of long tube headers. Long tube header's are more free flowing than your restrictive stock shorty headers. You'll see a nice gain in performance as well as sound. Along with these Axle-Backs, your Mustang is going to sound 10x more aggressive whiling having a nice power gain.
(approx) 1 Hour
Light to Moderate mechanical skill required.
What's in the Box
|Piping Material:||Aluminized Steel||Tip Material :||Polished Stainless Steel|
|Piping Size:||2.5"||Tip Size:||3.5"|
|Muffler Type:||Chambered||Fitment:||05-09 V6 Mustangs|