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Flowmaster Outlaw Series Axle-Back Exhaust (15-17 V6)

Market Price $499.99 You Save 16% ($80.00)
Our Price

$419.99

FREE Shipping
  • Item 525581B
  • MPN# 817713

In Stock Ships same business day. Choose options to add to cart

Features, Video & Details

  • Super Aggressive Flowmaster Outlaw Sound
  • Durable 409 Stainless Steel Construction
  • 2.5" Mandrel-Bent Tubing
  • 4" Polished Stainless Steel Tips
  • Includes Two Flowmaster Outlaw Mufflers
  • Fits 2015-2017 V6 Mustangs

Review & Installation Video

Review & Install Video

Super Aggressive Flowmaster Sound. Give your V6 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 2.5" 16 gauge 409 stainless steel tubing for it's corrosion resistant properties, the Flowmaster Outlaw Axle-Back features (2) 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.

Cut & Clamp Installation. The installation of this Axle-Back Exhaust requires cutting and removing the stock muffler assemblies, and clamping the new muffler assemblies in place. Clamps and instructions are provided.

Application. This Flowmaster Outlaw Series Axle-Back exhaust system is designed to fit the 2015-2017 V6 Mustangs for both great looks and great sound.

Fitment: 2015 2016 2017 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: 2.5" Tip Size: 4.0"
Muffler Type: Straight-through Fitment: 2015-2017 V6
Will it fit my Mustang?
  • V6 - 15, 16, 17

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
This with an Xpipe/Resonator Delete is great

I want to clarify I have this and a resonator delete (aka an Xpipe). On cold starts sounds great and is loud but when its warm idling its not annoying. Drones alittle on the highway but nothing really ...

Read More
Helpful (1)

5/5
Loud

If loud is what you are looking for. This is the product for you.

Helpful (1)

Overall Rating 4.6 out of 5 stars
Read All 38 Reviews

Customer Photos (7) Submit Your Photo

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22 Questions / 6 Answers

Ask a Question

I have the exhaust put on and now whenever I hit around 1500-2500 rpm, the car sort of shakes and has a really loud almost drony sound, then once I pass on to 3000 rpm it sounds normal and like it should. Is this normal?

Rl57

  • The Flowmaster Outlaw Series Axle-Back Exhaust should not result in the vehicle shaking or making any strange noises, however depending on your entire exhaust set-up, it may drone. It would be difficult to know exactly what is occurring with the exhaust without seeing it in person, so we would recommend visiting your trusted installer to see what is going on.

    AMJEFF

Helpful (0)

Will the flowmaster affect the catalytic converter? From what I've heard is that it's illegal in California if something or have done with the cats? I just wanna make sure if flowmaster outlaw legal in cali?

JonathanV

  • The Flowmaster Outlaw Series Axle-Back Exhaust will install after the catalytic converters, and have no effect on their function. These will cause no issues with smog testing/emissions in California. We do recommend making sure these will pass your local drive by noise level regulations, which can vary greatly from one area to the next.

    Rob D

Helpful (0)

I have a 2015 v6 convertible. What can I do for the exhaust to stop hitting the frame.

Jacorey

  • We would recommend having an exhaust shop to look at the axle back exhaust to see exactly why it would be contacting the frame and then making adjustments from there to correct the problem.

    AMjordan

Helpful (0)

Will the flow master outlaw axle back reach all the way back to a catted shorty H-pipe, along with a set of BBK long tube headers on a 2017 v6? Or will the factory catalytic converter be the piece that'll combine the axle back with the shorty catted H-pipe.

GerardoG

  • The Flowmaster Outlaw Axle Back will reach your Catted Shorty H Pipe. You will not need to use your factory catalytic converter.

    VincentV

Helpful (0)

I live in California. If i put this on, will i still pass smog? This is probably the only reason holding me back. I have a 2017 v6 mustang.

Daniel

  • The Flowmaster axle backs will pass smog testing however you will want to check your local laws on noise restraints to be safe.

    Ricky36

Helpful (0)

Does this comes as a set? Both exhausts and clamps?

Jrlajara

  • This will come with the passenger and driver side exhaust with clamps for the price listed!

    Ricky36

Helpful (0)

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Customer Reviews (38) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 4.631579 4.6
  • Exhaust Note 4.473684 4.5
  • Fit & Finish 4.81579 4.8
  • Bang For Your Buck 4.605263 4.6



  • 5/5

    Installation Time: Less than 1 Hour

    June 07, 2017

    This with an Xpipe/Resonator Delete is great

    I want to clarify I have this and a resonator delete (aka an Xpipe). On cold starts sounds great and is loud but when its warm idling its not annoying. Drones alittle on the highway but nothing really annoying. I cruise with the radio at like 10-15 and you dont notice it really. If youre only installing this there shouldnt be an drone. Makes the V6 sound great. Its no GT but its a great sound nonetheless.

    BrandonL

    Year: 2017 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    May 30, 2017

    Loud

    If loud is what you are looking for. This is the product for you.

    JasonR

    Year: 2016 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    May 04, 2017

    WORTH IT!

    I honestly love the sound this gives to my car. It's not a V8 and it never will be, but this is my car and I love everything I've done to it! The exhaust definitely gives it a more deep tone and really makes you feel like you're driving a mustang. It really is an amazing Mod, I don't know why I didn't do it sooner! Had it installed by Ford so my warranties won't be voided, way worth it. peace of mind and an awesome sound!

    Rush

    Year: 2016 Submodel: V6

    Helpful (1)

  • 1/5

    Installation Time: Less than 1 Hour

    April 30, 2017

    TOO MUCH DRONE!

    It sounds great, except for the fact that no matter what I do there is an excessive amount of drone. I wish i was notified of this before purchasing.

    LuisP

    Year: 2016 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    April 27, 2017

    Perfect!!

    Bought this exhaust after doing alot of research on all my options. I couldn't be more pleased with this exhaust, it sounds perfect! You cant beat the price either! Only costed me $50 per side for the install. You will love this exhaust.

    Zman918

    Year: 2015 Submodel: V6

    Helpful (1)

  • 4/5

    April 15, 2017

    Over-the-top drone.

    Like most V6 Mustang owners, I wanted a more aggressive tone than the stock mufflers provided. To be honest, I went with these because they were the cheapest option American Muscle offered. I wasn't too concerned with the type or volume of the sound because I just wanted the stock mufflers gone. I had them professionally installed by a local muffler shop. I noticed a difference in throttle response and acceleration immediately. These really open up the exhaust and remove that factory restriction. By far the best bang for the buck in terms of bolt-on performance. I had installed the Roush cold-air system and BBK throttle body about a week prior to the exhaust and it really rounds out the package nicely. Okay, let's address the elephant in the room, exhaust note and volume. There's a reason for the title of this review, and it's because these mufflers are LOUD and RASPY. If what you're looking for is head-turning, ear-plugging, scare-the-poo-out-of-the-neighbors-yappy-little-puffball, then go no further. You've arrived, and everybody within a 3 mile radius will know. They give a trumpety tuner-like rasp on acceleration, and crackles, pops, and gurgles abound on decel. Lots of distortion, especially at full-throttle. These are mean, nasty sounding mufflers. Definitely an "Are you sure you want to mess with me?" type of vibe. And therein lies the rub. Because they sound so good on the street when coasting up to that stop light, and then when mashing the gas to the floor when you pull away, their highway manners are atrocious. Way, WAY too much drone, at least for me. At 75 MPH in 6th gear under partial throttle at 2000 RPM the drone is so acute that it actually makes my ears start to tingle. I've started to avoid spending any time at all on the highway simply because I can't handle the drone. It's nearly impossible to carry on any kind of meaningful conversation, and turning up the radio to drown it out only makes things that much worse. I know what you're thinking, "Well, ya dope, what did you expect? It's a Mustang and you installed a performance exhaust!" To which I would answer, "Yes, I know. Clearly my priorities were a bit askew as I made this purchase." Please know that I'm not, by any stretch of the imagination, trying to dissuade anyone from purchasing these mufflers. In a nutshell they are by far, as mentioned above, the best bang for the buck when it comes to bolt-on performance. However, the price to be paid for that is what I consider to be (excessive) cabin drone at highway speeds. I am at present, unfortunately, looking for replacements; something with a nice balance of volume to tone that won't make me feel like I've run a marathon after a road trip.

    Flatus

    Year: 2016 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    March 07, 2017

    Amazing sound!

    I just installed these bad boys along with flowmaster's scavenger x-pipe and it sounds just amazing. I also installed a Roush CAI and it's one mean Mustang now. So happy with the end result and would definitely recommend these over any other axel backs.

    SergioJ

    Year: 2015 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    February 27, 2017

    Fantastic exhaust

    I can't imagine a V6 Mustang sounding much better than this. This exhaust has a deep tone and is LOUD! It's louder than I expected even after reading the other reviews and watching videos. The sound is incredible. Shop install was only $100 tax and took less than an hour. Great exhaust at a great price!

    JeremyF

    Year: 2015 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    January 27, 2017

    Loudddddd

    This will change the way people look at your car. It is absolutely amazing and I'm glad I made the purchase. Very affordable and super loud!

    Brad

    Year: 2016 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    January 27, 2017

    Flowmaster Outlaw

    Bought this for my daugters 16 V6. Sounds great! Actually know when she gets home. I can hear her pull in.

    KWJ74

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    December 13, 2016

    Loud Deep Aggressive Sound! AMAZING!

    This exhaust has an amazing deep Aggressive sound and is very loud! It is exactly what I want! I highly reccomend this exhaust, I had it installed at a shop in 1 hour and only for 120$!

    Mustang17

    Year: 2017 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    December 04, 2016

    Great all around

    Very easy install, took about an hour and the fit was perfect! Sounds great too, especially for a v6. A very deep and loud sound. Love it!!

    Ashlee

    Year: 2016 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    November 22, 2016

    Beautiful !

    I took it to a shop and it was done within an hour. Beautiful sound! Great price with a rebate!

    Danny

    Year: 2016 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    August 15, 2017

    Honest review!

    You have a mustang but not this!!!!!!!!!!!!! Install this and the best sound will make you feel like the king of the road. Mustang with this is the real muscle car. My car is a v6 convertible 2015.

    Ali

    Year: 2015 Submodel: V6

    Helpful (0)

  • 4/5

    Installation Time: Afternoon

    July 18, 2017

    Freakin' LOUD!

    This is a great Axle Back Exhaust for the money. It came with detailed instructions and was pretty easy to install. When I first hit the start button with these babies the rumble brought a smile to my face! They sound absolutely amazing around town. But I have to admit that the highway drone is pretty rough. It only gets annoying at about 75mph @ 2,000rpm. My wife said she prefers the stock pipes but she understands why I like the upgrade. I give 'em one thumbs up, but if you can afford the Roush system you might want to go with those.

    JeremiahP

    Year: 2015 Submodel: V6

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    July 18, 2017

    Must have

    Changes stock sound completely, had it on for almost 4 months now, although I'm gonna add the X-pipe as well as the bbk shorty's

    JesseM

    Year: 2017 Submodel: V6

    Helpful (0)

  • 5/5

    Installation Time: Afternoon

    July 10, 2017

    Just plain awesome!

    I have had this exhaust on for going on 2 weeks and I must say it's awesome! On start up it has a growl and while driving there is drone but what can you expect it's a performance exhaust! I love it and had gotten so many compliments from I love how your car sounds to is it a V8? I am happy with my exhaust set up and would definitely buy it again down the road for my next mustang, GT. As a proud V6 owner I love seeing the look in people's face and look like "What, that's a V6!?" If your trying to decide yes or no, just do it! You won't be sorry.

    FordMike

    Year: 2016 Submodel: V6

    Helpful (0)

  • 5/5

    July 01, 2017

    Great quality

    Looks great. Haven't installed yet but overall happy with the quality of the product.

    Luis

    Year: 2016 Submodel: V6

    Helpful (0)

  • 3/5

    Installation Time: Less than 1 Hour

    June 29, 2017

    It's okay

    Was expecting it to be louder. Easy to install. Not sure if it's worth as much as it cost. Has a low baritone sound.

    Cristian

    Year: 2016 Submodel: V6

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 27, 2017

    Good Purchace

    The sound you get from the outlaws is superb for a V6. Its nice and deep on a cold start and keeps it as it warms up. stays deep trough the revs but does get kind of high past 6 thousand, nothing an x pipe and intake can fix. If you like a little backfire bingo. makes your exhaust actually look mean as well

    HunterP

    Year: 2015 Submodel: V6

    Helpful (0)

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