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

Customer Reviews (100+) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Less than 1 Hour

Installation Cost:0-$100

• Loudness / Volume 4.776859 4.8
• Exhaust Note 4.776859 4.8
• Fit & Finish 4.752066 4.8
• Bang For Your Buck 4.680672 4.7

• 5/5

  Installation Time: Less than 1 Hour

  July 15, 2017

  Loud! Loud! Loud!

  If you want LOUD you will get LOUD. I choose Flowmaster Outlaw Axle-backs, because while I was shopping for a used 2014 Mustang GT, I heard them on one of the Mustangs I looked at and went WOW!!!! Went to a car show to hear other Axle-backs before making my decision, but other systems seemed to have a high pitched, raspy tone. Flowmaster Outlaw Axle-backs seemed to have a low, deeper pitched, Muscle Car sound. "Easy Install"...... I am not a young guy (60's) and after jacking up the car and placing jack stands under rear axle for safety, it took approx. 1 hour to install. Just follow the instructions and don't forget to install the 2 little round clips, to keep exhaust from sliding around. With Track Pack and 373 rear, mine, like everyone else say's, has an annoying drone at approx. 2000 RPM, but I wanted loud and I got loud. "If you can't stand the heat, get out of the kitchen" ........ Otherwise go for the Flowmaster Outlaw Axle-backs and enjoy your new found LOUDNESS!!!.

  JoeC

  Year: 2014 Submodel: GT

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 4

    4
• 5/5

  Installation Time: Afternoon

  April 08, 2017

  Loud

  All in all very happy with how they sound. From the stock axel back to flow masters it sounds like a completely different car! There is a slight drone at 2k Rpms but other then that I'd say it's a great purchase and puts a big smile on my face anytime time I start it up or I'm on driving the car. Highly recommend these you won't be disappointed!

  Jon

  Year: 2013 Submodel: GT

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 4

    4

  • Bang for your Buck 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  March 19, 2017

  PERFECTION

  I was stuck between getting these or the SLP Loudmouths. I'm glad I chose these because these DELIVER. They are loud. I turn on my car and everyone turns. Perfect when I'm cruising, you can hear it rumble from far. At WOT you can really hear that thunder just clap so everyone knows you're there. It has a perfect purr. Some people didn't believe me when I said it was just the axlebacks. Its extremely worth it and loud. Yes the drone is there at 2K rpms but it doesn't bother me at all. Gets covered with the radio or your chick yelling at you. Overall these are awesome. HIGLY RECOMMEND IT!

  Ilovemustangs97

  Year: 2013 Submodel: GT

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 5/5

  February 28, 2017

  Unbelievable!!!

  These axle backs sound amazing. Music to my ears. The rumble during start up and acceleration is off the charts. I call them my new noise makers. Took about 1 1/2 hours in my driveway to install. Stock mufflers are a little difficult to remove from the rubber hangers, but a little lube will help out. There is a slight drone around 2k rpms. Nothing that's too difficult to handle. These axle backs crank up the sound of your V8 the way you love to crank up your favorite song. Highly recommend them.

  DonaldR

  Year: 2014 Submodel: GT

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  October 10, 2016

  Awesome

  Love the sound ,old school mixed with new school flowmeter. Easy install didn't even have to take the pan bar off

  thecarbon

  Year: 2013 Submodel: GT

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 5/5

  August 08, 2016

  Axle Back Outlaw exhaust

  You will not regret getting these!! Some noise sound on inside but gives it that race mode effect. If you have a standard you will love the pop and crackling effect when changing gears and letting it slow down

  Kathystang

  Year: 2014 Submodel: GT

  Helpful (1) Thanks for your input!
• 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 Submodel: GT

  Helpful (1) Thanks for your input!
• 5/5

  Installation Time: Afternoon

  May 12, 2016

  Get it

  I've NEVER tackled anything like this before but installation videos seemed straight forward so I tried. Sounds great. Looks great. First couple days will be EXTREMELY load until carbon builds up. Use WD40 to remove old exhaust by spraying where old hangers come out of rubber mounts. Also, if it's still a little loud in the cabin, by some peel and seal for trunk and floor pan. Love my "new" mustang

  13GT

  Year: 2013 Submodel: GT

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 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 Submodel: GT

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 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 Submodel: GT

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  June 25, 2015

  THUNDEROUS!!

  I heard these on another 2014 GT driving on a main road and knew I had to get them. They sound like rolling thunder! This exhaust system is menacing and throaty. My mechanic's initial reaction when we first started her up was: "WHOA! Sounds like thunder! Jeez that's loud!" This is how an American V8 is supposed to sound. The in cabin noise is music to the ears. The ground shakes and storefront windows vibrate when you pass by. Be prepared to set alarms off. To me, the 2k drone that everyone talks about is not bad at all. I've been in cars that drone and those have given me migraines. Haven't had a migraine with these. My wife has a 2015 GT with the Roush and the Outlaws make hers sound tame. I'm sure part of it is due to the additional resonator in the 2015 model. I highly recommend this exhaust. It's sure to bring a grin on your face every time you step on the throttle.

  Jupiter

  Year: 2014 Submodel: GT Nassau, NY

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 4

    4

  • Bang for your Buck 5

    5
• 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 Submodel: GT Davenport, FL

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  December 28, 2014

  Great Exaust

  Louder than stock but not obnoxious. Great tone... Slight drone around 2k but nothing the radio can't drown out... Very happy with them!

  Meekrakkin

  Year: 2014 Submodel: GT Belfry, KY

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  June 16, 2014

  Aggressive sound for less money

  Easy install. 45 minutes to remove the stock mufflers and 15 minutes to install the new ones and adjust them. Aggressive sound at all rpm ranges. In my mind this should be the starting point for aftermarket mufflers otherwise you may as well leave the stock ones on there as the sound characteristics aren't different enough to justify the money you spend. You will get some drone at cruising speeds but most mufflers do. For the money these mufflers seem pretty hard to beat. I have used Magnaflow, Bassani, Pypes, Dynomax in the past and they all have their strengths and weaknesses. These Flowmasters seem as good as any of them for a little less money. They make a good jumping off point if you are unsure about how loud you want your car. In my mind these are about a 7 out of 10 on the loudness scale with 1 being stock and a full length exhaust upgrade with headers and non-catted x-pipe being a 10. They also appear to be fairly well made out of stainless. Give em' a try.

  DirtyDeeds

  Year: 2014 Submodel: GT Lancaster, OH 43130, USA

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 4

    4

  • Exhaust Note 4

    4

  • Fit & Finish 4

    4

  • Bang for your Buck 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  February 19, 2014

  Love the sound...

  I could not have been happier with the sound of the Outlaws and the customer service provided by AM. After nearly a week straight of listening to exhaust on YouTube and other sites I made my decision on the Outlaws.. I will admit I was worried that it would not be the sound I had hoped for but oh my!!!! I could not believe the sound and the loudness of the Outlaws on my Boss 302!!! Contrary to what some might say, It was the perfect sound I was looking for!! Ofcourse, I went a little further by removing the resonators and WOW!!! It's been over 2 weeks since I have had them installed and I still giggle like a school girl hearing my Boss roar through the gears!! And as always, AM makes everything so easy and customer service is top notch!!!!

  Chadh3529

  Year: 2013 Submodel: Boss Tulsa, OK

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 4

    4
• 5/5

  Installation Time: Less than 1 Hour

  February 14, 2014

  Flowmaster Outlaw Axlebacks

  I just put these on my 2013 Mustang GT and I love them. I was set on the Roush axlebacks and then heard these on YouTube and decided to go with the outlaws. I definitely recommend these mufflers to anyone that wants a loud but good sounding tone. I took off my OEM mufflers and started the car, and these mufflers have about the same volume but different tone. The only down side of these mufflers is the drone at 2k rpm. Its the worst drone ive ever heard so I stay away from 2k rpms. If your sensitive to drone, these are not for you. But other than that, these are awesome pipes. Also, they are VERY loud! I have my car completely stock except these mufflers and my cold start wakes up the neighborhood. You've been warned.

  Getsome19

  Year: 2013 Submodel: GT

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 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 Submodel: GT Beech Creek, PA 16822, USA

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 4

    4

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 5/5

  Installation Time: Less than 1 Hour

  July 18, 2013

  Great Sound at a Great Price

  This was a quick 30-40 minute install that completely changed the character of my '13 GT. As others have said, the clips online truly do not do the mufflers justice. It just a completely different sound than any other stang I have heard. This is my third mustang, with my '08 GT and '07 GT500 both having Flowmaster American Thunder mufflers. The Outlaws are hands down the best sounding of the three.

  Matt9494

  Year: 2013 Submodel: GT Chickamauga, GA, USA

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 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 Submodel: GT Houston, TX, USA

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5
• 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 Submodel: GT Tampa, Fl

  Helpful (1) Thanks for your input!

  • Loudness (Volume) 5

    5

  • Exhaust Note 5

    5

  • Fit & Finish 5

    5

  • Bang for your Buck 5

    5