Win $500 Towards Your Project Car Enter Now
1-888-332-7930 M-F 9-9,Sat 9-5:30,Sun 12-4 ET

Free Shipping on Everything. Seriously. Details

Flowmaster Outlaw Catback Exhaust - Stainless Steel (11-12 GT, GT500)

13 Reviews
Our Price

$807.00

  • Item #18430
  • MPN# 817560

  • Market Price $895.99
  • You Save 10% ($88.99)
In Stock Ships same business day.
Free Shipping on Everything
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 two Flowmaster Outlaw mufflers
  • Fits 2011-2012 GT & GT500
Description
Super Aggressive Flowmaster Sound. Give your Coyote powered Mustang that unmistakable Flowmaster sound with the Outlaw Series Catback 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.

Stainless Steel Construction. Constructed from durable 3" diameter 16 gauge 409 stainless steel tubing for it's corrosion resistant properties the Flowmaster Outlaw Catback 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 Catback exhaust system is designed to fit the 2011 to 2012 GT & GT500 for both great looks and great sound.

Mustang 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
Axleback 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, GT500
Fitment
  • Boss 302 - 12
  • GT - 11, 12
  • GT500 - 11, 12

Most Helpful Reviews View All

Overall Rating 4.8/5 Write a Review
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) (0)

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 (1) (0)

Videos

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 View Full Transcript

Customer Photos (2) View All

You Might Also Like

Q & A (4 Questions, 4 Answers) Ask a Question

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

Ghost10 Year: 2010 Model: GT

Question Resolved
Good Question (0) (0)
  • 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!

    Helpful (1) (0)

    Best Answer

    LisaS Year: 1992 Model: GT

Show 1 more answer

Tune I have a aftermarket tune. Do I need to get a new one if I install this?

sofakingdead Year: 2012 Model: GT

Question Resolved
Good Question (0) (0)
  • the AM team told me i didn't have to have a tune if the only mod i was doing was the catback flowmaster kit, however this exhaust is a huge upgrade over stock and will see its full potential with a tune, i would highly recommend one with an intake but its not required. this is a great upgrade that will benefit from future mods like a tune, an intake and throttle body or anything else you throw at it, i love it and it's very aggressive, if you like loud and a race car like sound, this is the exhaust for you, if not go with something milder, or an axle back, but it will break in good after a little driving and sounds waaaayyy better than 1st start up imo.

    Helpful (0) (0)

    Mayhem12 Year: 2011 Model: GT

    Top 1000 Contributor

Show 1 more answer

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

Zach10 Year: 2014 Model: GT

Be the First to Answer This Question
Good Question (0) (0)

Reviews (13) Write a Review

  • 5 Stars .77 77%
  • 4 Stars .23 23%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.8

out of 5 stars

12 Customers Recommend this Product

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume: 5 5/5
  • Exhaust Note: 4.923077 4.9/5
  • Fit & Finish: 4.615385 4.6/5
  • Bang For Your Buck: 4.769231 4.8/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    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)

  • 4/5 Yes, I recommend this product

    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 Yes, I recommend this product

    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 (1) (0)

  • 5/5

    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 (0) (0)

  • 5/5 Yes, I recommend this product

    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 (0) (0)

  • 5/5 Yes, I recommend this product

    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 (0) (0)

  • 5/5 Yes, I recommend this product

    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 (0) (0)

  • 5/5 Yes, I recommend this product

    August 26, 2013

    Stupid LOUD!!

    These exhaust are really loud. I get asked all the time if i have straight pipes and they're surprised when i tell them i still have stock headers and cats. If you're looking for loud and raspy this is the exhaust to get. As for installation you will most likely need a lift to get the stock over axle pipes off and the new ones on.

    WillyWonka08

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

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    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 (0) (0)

  • 4/5 Yes, I recommend this product

    July 24, 2013

    Amazing sound!!

    Was going to get a Borla exhaust until I heard the flowmaster on a youtube video and then saw How much cheaper it was. Exhaust came in about a week after ordering with no issues thanks to American muscle. Stock exhaust was a pain to remove but eventually managed it. After that it was relatively smooth sailing fitting the flowmaster on. First start up with the flowmaster in blew my mind. It was making the whole shop my car was in shake it was so loud. The video in the Internet doesn't even do this exhaust justice. I definitely recommend this product.

    Evolution

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Edmonton, AB, Canada

    Helpful (0) (0)

More Products You Might Like

Related Categories