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Flowmaster Outlaw Series Axle-Back Exhaust (13-14 GT)

100 Reviews
Our Price

$430.97

  • Item #18445
  • MPN# 817592

  • Market Price $487.00
  • You Save 12% ($56.03)
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Product Videos Customer Photos
Features
  • Super Aggressive Flowmaster Outlaw Sound
  • Durable 409 Stainless Steel Construction
  • 2.75" Mandrel-Bent Tubing
  • 4" Polished Stainless Steel Tips
  • Flowmaster Outlaw Mufflers
  • Fits 2013-2014 GT and Boss Mustangs
Description
Super Aggressive Flowmaster Sound. Give your Coyote powered Mustang that unmistakable Flowmaster sound with the Outlaw Series Axle-Back Exhaust System from AmericanMuscle. This system improves exhaust flow using Flowmaster's race-oriented style Outlaw mufflers for that super, aggressive exhaust note your high powered Pony deserves.

Stainless Steel Construction. Constructed from durable 2.75" 16 gauge 409 stainless steel tubing for it's corrosion resistant properties, the Flowmaster Outlaw Axle-back features two race-oriented mufflers with massive 4.0" diameter polished stainless steel tips for impressive muscle car looks and sound. As an added bonus the tips are embossed with the "Flowmaster" logo for true custom styling.

Application. This Flowmaster Outlaw Series Axle-Back Exhaust System is designed to fit the 2013-2014 GT and BOSS Mustangs for both great looks and great sound. Reuses the factory clamps for installation.

Fitment: 2013 2014 Details

What's in the Box
  • (2) Muffler assemblies
Installation Info
Tech Specs
Axle-Back Exhaust Specifications
Piping Material: 409 Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 2.75" Tip Size: 4.0"
Muffler Type: Straight-through Fitment: 2013-2014 GT, BOSS
Will it fit my Mustang?
  • Boss 302 - 13
  • GT - 13, 14

Most Helpful Reviews

5/5
Amazing

For the money it's an amazing sound. I belong to a car Club and even they were shocked. I thought I would get a lot of cab noise but only a light hum. Outside the car, you know I'm there. Very easy to ...

Read More
Helpful (1)

5/5
Flowmaster outlaws

I always check on YouTube before buying exhaust and I liked this set up. I placed my ordered and as usual received it very quick and everything was there that was needed install was quick and simple the ...

Read More
Helpful (1)

Overall Rating 4.7 out of 5 stars
Read All 100 Reviews

Review & Install Video

Customer Photos (22) Submit Your Photo

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7 Questions / 9 Answers

Ask a Question

Is this the same exact same part number as the one for the 2011-2012? It says out of stock on the 2013 gt. Also do they stick out more than the stock mufflers on the 2013? The picture online shows a 2013 under the 2011-2012 with these on it and it looks like they are sticking out way past the bumper. Thats why i was wondering if they were different length on the 2013 compared to the 2012.

Whitehorse

  • No, this isn't the same part number as the 2011-2012 Outlaws. The 2013 exhaust changed ever so slightly and Flowmaster created an updated version specifically for the 2013s that will fit very nicely in the bumper cutouts! Hope this helps!

    LisaS

    Good Answer (2) (0)

Show 2 more answers Question Resolved

Fitment Currently I have the Flowmaster American Thunder catback and I'm not entirely thrilled with the "loudness" will these mount up to my current pipes? Is it the loudest flowmaster option?

notrq

  • It's loud...no doubt about it. They mount up quickly, took me about 45 minutes total. These are actually too loud for me and I'm considering trading them for some Am. Thunders! LOL

    Shane1980

    Good Answer (0) (0)

Show 1 more answer Answer This Question I need this answered (0) (0)

Tune? While I plan on getting a tune in a few months my question is does this Axle-back exhaust require a tune?

blkstangGT2014

  • No tune would be required for the installation of an axle-back. Just install and enjoy!

    LisaS

    Good Answer (2) (0)

Show 3 more answers Question Resolved

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Customer Reviews (100) Write a Review

Overall Rating 4.7

out of 5 stars

Installation Time:Less than 1 Hour

Installation Cost:0-$100

  • Loudness / Volume 4.739583 4.7
  • Exhaust Note 4.760417 4.8
  • Fit & Finish 4.760417 4.8
  • Bang For Your Buck 4.691489 4.7



  • 5/5

    July 06, 2016

    Just mean!!!

    My 2014 coyote coupled with the Flowmaster Outlaws is one of the meanest sounding engines I've ever listened to. It sounds like a totally different car. If you want aggressive you want outlaws.

    Maximus

    Year: 2014 Model: GT 'Stangs I have owned: 2

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    April 22, 2016

    Amazing

    For the money it's an amazing sound. I belong to a car Club and even they were shocked. I thought I would get a lot of cab noise but only a light hum. Outside the car, you know I'm there. Very easy to install. I sometimes just start my car just to hear the rumble. I love it.

    Eyecandy

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    March 17, 2016

    WOW! These things are loud!

    At first, I was very skeptical. I looked at every single axle back that caught my eye, and believe me it was a hard decision, considering I was going off the reviews on here. Eventually I pulled the trigger on the Flowmaster Outlaw Series, and man, am I glad I did! They are loud (for only an axle back) and give your Stang that nice muscle car roar! If you're a fan of loud, GET THESE, don't hesitate. But be warned, there is a drone, mainly on the highway at 2k rpm, but besides that these are top notch! Like everyone else says, the longest part about the install is getting the stock axle back off, so once you get those off, it's pretty much smooth sailing!

    Sinisterstang302

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    February 04, 2015

    What a change...

    I have a tune... JLT Air Kit, a Whiteline Trans Bushing and a Ford Racing short throw. In addition to this muffler I also added a new 3" MBRP H-Pipe. I tell ya what kids... If you want sound... this is it. I have been a muscle car owner for years. I still have my cats and resonators, but this was just surprisingly awesome! I am not sure I want to do headers and a cat delete because it just might be too much! Total install was $130 with the H-Pipe. Muffler alone would have been $65. Thanks to Detroit Muscle Speed Shop in Lakeland, FL for the fast and awesome job on the install. Everyone.. this is the muffler if you want your car to be noticed!

    Billiam

    Year: 2013 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Davenport, FL

    Helpful (1) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    August 17, 2013

    Fast and loud

    Exhaust is great, it takes longer to get the stock exhaust off one side then It does to put both outlaws on. Only thing I noticed is a decent drone at 2k rpm

    Tacticalbacon

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 4 Beech Creek, PA 16822, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    July 02, 2013

    Excellent!

    It took about an hour and half to install. No problems at all, fit is great. Yes, they are loud and that's why I got them. Sounds like a real car now!

    Stang72

    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Houston, TX, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    June 13, 2013

    Great Exhaust

    I made a huge mistake when I bought this exhaust. American Muscle couldnt ship it to me in time for the same price, so I bought it from another supplier that could, and boy was that a mistake, as I got the wrong year model and ended up having to wait even longer. I'll always buy from AM even if I have a to wait a extra 2 days. The exhaust note is great, and around 2100 rpms there is a slight drone, but you shouldnt have bought a mustang if you dont like loud. The only issue I had with installation were those rubber exhaust hangers, but after a few youtube videos on doing these I quickly installed these myself, and I am not a clever man. 5 Stars from Flowmaster here!

    anezay2004

    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Tampa, Fl

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    December 22, 2012

    Flowmaster outlaws

    I always check on YouTube before buying exhaust and I liked this set up. I placed my ordered and as usual received it very quick and everything was there that was needed install was quick and simple the hardest part was getting the stock mufflers off but overall easy. The sound was exactly what I was looking for very happy with my purchase as always I'll be using Americanmuscle.com again everytime.

    DeepImpact

    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 5 TX

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    January 23, 2013

    Quick easy install, great sound

    Super easy install, took about 40 mins. Sound is awesome. There is drone at 2k rpm's but who cares, turn the radio up. A 3.73 or 4.10 gear swap would probably fix this. I found using a small piece of 2x4 wedged between the cat back exhaust pipe and panhard bar support brace will allow easier removal of the factory axle back. While pushing up on the exhaust tip, with a little muscle, slide the muffler towards the front of the car and it will drop out of the hanger mounts. Have fun and enjoy.

    Marky1

    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 4 Houston

    Helpful (7) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    November 11, 2012

    Great Sound, Great Looks, Great Price, Easy Install

    These Flowmaster Outlaws are amazing. No drone at all driving at 75 in my 2013 GT. At idle, they are barely louder than stock but much deeper and rumbley. When I rev it up it sounds like rolling thunder. Great smooth sound, not choppy. Around town getting through the gears it gets pretty loud, but as soon as you stop accelerating it quiets down again just as it should. Installation takes one wrench and about an hour, most of which is spent getting the bulky stock mufflers off. The 4 inch tips look great and really fill out the exhaust cutout in the bumper. I could not be more pleased with this product.

    blue5point0

    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 St Charles, MO, USA

    Helpful (5) (0)

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