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Flowmaster Outlaw Cat-Back Exhaust - Stainless Steel (11-12 GT)

14 Reviews
Our Price

$830.97

  • Item #18430
  • MPN# 817560

  • Market Price $939.00
  • You Save 12% ($108.03)
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Product Videos Customer Photos
Features
  • Super Aggressive Flowmaster Outlaw Sound
  • 409 Stainless Steel Construction
  • 3" Mandrel-Bent Tubing
  • 4" Polished Stainless Steel Tips
  • Includes Scavenger X-Pipe and (2) Outlaw Mufflers
  • Fits 2011-2012 GT Mustangs
Description
Super Aggressive Flowmaster Sound. Give your coyote powered Mustang that unmistakable Flowmaster sound with the Outlaw Series Cat-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.

Race Car Growl. The included Scavenger X-Pipe not only helps increase power, but it also adds a loud raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

Reuses Stock Cats. The X-Pipe bolts up directly behind the factory catalytic converters with no cutting required saving you time and money. By reusing your stock catalytic converters, you ensure that your Mustang is smog-legal.

Stainless Steel Construction. Constructed from durable 3" diameter 16 gauge 409 stainless steel tubing for it's corrosion resistant properties, the Flowmaster Outlaw Cat-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 Stainless Steel Cat-Back Exhaust System is designed to fit the 2011 to 2012 GT Mustangs equipped with either aftermarket shorty headers or the factory manifolds.

Fitment: 2011 2012 Details

What's in the Box
  • (1) Right muffler assembly
  • (1) Left muffler assembly
  • (1) Scavenger X pipe assembly
  • (1) Right intermediate pipe
  • (1) Left intermediate pipe
  • (4) Band clamps
  • (2) Hanger keepers
Installation Info
Tech Specs
Axle-Back Exhaust Specifications
Piping Material: 409 Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 3" Tip Size: 4.0"
Muffler Type: Straight-through Fitment: 2011-2012 GT
Will it fit my Mustang?
  • Boss 302 - 12
  • GT - 11, 12

Designed to be used with the factory manifolds or aftermarket shorty headers installed.

Most Helpful Reviews

5/5
Outlaw Catback System

This is definitely an aggressive sounding system. Bought this system for my brother's 2011 GT and it has improved the exhaust sound tremendously. If you're looking for a better sounding Mustang without ...

Read More
Helpful (3)

5/5
Totally different car now'

Shipping wast fast! Day I got it bad boy went on lift and was installed " get a friend because it just makes the installation a breeze" sounds is amazing all the guys at work love it buddy of mine has ...

Read More
Helpful (2)

Read All 14 Reviews
Overall Rating 4.8 out of 5 stars

Video

Hey I’m Justin with AmericanMuscle.com, and I’m going to be breaking down the Flowmaster stainless steel Outlaw series catback exhaust, fitting all 2011 and 2012 Mustang GTs. This system gets its name from the two race orientated outlaw series straight through mufflers, which are going to be a lot more aggressive than the majority of Flowmaster’s other street offerings, such as the super 44 or delta flow for example. In fact, Flowmaster claims the outlaw series is the most aggressive system available for your coyote Mustang. This exhaust also features 3” mandrel bent tubing throughout and a full 409 grade stainless steel construction. It is worth mentioning that Flowmaster includes what they refer to as their scavenger style crossover pipe, which does take the place of a traditional X or H pipe. Flowmaster claims that this design actually makes a little more torque than those other traditional mid pipes, and it’s something they use in all of their catback designs. Finally everything exits out those 4” polished tips, embossed with that sick Flowmaster logo. Since this is a Cat-Back, you can expect a slightly more involved install that should take you roughly 2 hours from start to finish using basic hand tools. Now let’s hear how the Flowmaster Outlaw series catback sounds compared to our factory exhaust.

Customer Photos (3) View All Photos

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7 Questions / 2 Answers

Ask a Question

Do you have a outlaw exhaust to fit the 2010 gt?

Ghost10

  • We offer the Flowmaster Outlaw Series Axle-Back Exhaust for the 2005-2010 GT. There doesn't appear to be an Outlaw Catback created for the 2010 GT though. I've attached the axle-back below if you'd like to take a look!

    LisaS

    Good Answer (1) (0)

Show 1 more answer Question Resolved

Will these fit a new 2014 GT? I was wondering if these catbacks would fit my 5.0 2014.

Zach10

Answer This Question I need this answered (0) (0)

what if any long tubes will fit these. I have this setup on my 2011 mustang gt and im going to buy some long tubes. Which long tubes will fit this catback system.

Gavin

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Customer Reviews (14) Write a Review

Overall Rating 4.8

out of 5 stars




  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    March 23, 2013

    Outlaw Catback System

    This is definitely an aggressive sounding system. Bought this system for my brother's 2011 GT and it has improved the exhaust sound tremendously. If you're looking for a better sounding Mustang without deleting the cats, then this is the system to have.

    J35Lew

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 4

    Helpful (3) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    July 01, 2013

    Totally different car now'

    Shipping wast fast! Day I got it bad boy went on lift and was installed " get a friend because it just makes the installation a breeze" sounds is amazing all the guys at work love it buddy of mine has the outlaw mufflers not the cat back big difference absolutely amazed with product

    MikeGT124

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Corpus Christi, TX, USA

    Helpful (2) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    September 11, 2014

    Unbelievable sound!

    This by far has got to be THE best exhaust I've ever heard! Will definitely turn plenty of heads. I had mine installed at a shop and even they were impressed with the sound. There is a very very minor drone at about 2100-2200 rpm but I personally love it! Worth every penny! Highly recommended if you want your 'stang to sound like nothing else out there.

    ChrisGTCS

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    August 27, 2014

    Louder then i thought

    Took some time getting the stock exhaust off and needed plenty of room to put the new one on, sounds really good almost like not having a exhaust at all

    Cruiserlevi2005

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Perryville, MO 63775, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 23, 2014

    Amazing sound!!

    This exhaust makes the mustang sound mean and aggressive! It's what every mustang should sound like! Definitely worth every penny!

    Keith13

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 San Antonio TX

    Helpful (1) (0)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    November 19, 2013

    Looks awesome, sounds loud, and worth the $

    Went from GT500 axlebacks to this system and its much louder at startup and thru all rpm ranges. There's drone around 2k rpm as most other people noted. If you want a system without drone then this isn't for you. It's a very solid product and worth the money for what you get.

    jaxmustang2013

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 5 Jacksonville, FL, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    November 07, 2013

    Installed on my 2012 Mustang GT

    Just as your site stated, the fit and finish are superb. I was blown away by the quality of the pipes. The installation went off with out a hitch, everything is beyond reproach . A excellent and quality product. I love my Outlaw Cat back Exhaust!

    Brian1987

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Pasco,WA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    August 26, 2013

    BEST EXHAUST HANDS DOWN!

    When i bought my 11' GT first stop was exhaust! I was first going to mismatch mufflers and x-pipes but decided to just take the guess work out and buy the complete Flowmaster catback. Fitment was no issue (car lift highly recommended). Took me and my friend about an hour or so. Muffler tips were centered with bumper cutouts & everything tightened down perfectly. Now lets get to the best part... THE SOUND. This exhaust is the perfect tone anyone would ever need. This is the loudest and most aggressive tone while still keeping your cats in place. I can have the monsterously loud sound while still keeping my cats in place. No check engine lights, no worries! This is one of the most affordable catbacks on the market right now. For anyone thinking of buying it... DO IT! You will love it!!

    Kpurdz

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 4 West Chester, NY

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    September 05, 2012

    HOLY $%&@... Loud!!!

    this is by far the loudest and most aggressive exhaust i've every had on any mustang. that being said i had a 347 fox mustang with full mac exhaust with long tubes and this system puts that to shame. i paid about $80 to have this installed and the shop really had to do some tweaking to get them right, plus they had to tack weld the pipes because even when they were tight the pipes were still moving. i wasn't sure about this system when i first installed it but after a week of driving it broke in well and sounds amazing. if you want a dramatic exhaust change that will blow everyone away this is the exhaust you want. its super aggressive and really sounds like a race car. drone is very minimal and when you're at cruising speed or idle there is almost none. when you decide to open it up be prepared because this system will rock your world. glad i went with this system now, just waiting on the flowmaster shorty headers they just released to show up on AM to finish the package off. i would definitely buy these again now that i've had them for a bit.

    Mayhem12

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Albion NY

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    February 17, 2016

    Best purchase I have made so far!

    I had researched multiple catback systems. I was looking for an aggressive system that wasn't full of drone or popping and cracking. I could not have made a Better decision going with the outlaw. I had a local shop install took about 2 hrs and was done for 80$ plus tax. Thank you American Muscle as their customer service is second to none. and their products come in perfect condition within a couple of days in the east coast.

    Coyote50

    Year: 2011 Model: GT 'Stangs I have owned: 1 Huber heights ohio

    Helpful (0) (1)

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