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Flowmaster Outlaw Series Axle-Back Exhaust (05-10 GT, GT500)

Flowmaster Outlaw Series Axle-Back Exhaust (05-10 GT, GT500)
100+ Reviews 13 Answers
Market Price $516.99 You Save 12% ($59.51)
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  • Item 18423

  • MPN# 817511

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    Flowmaster Outlaw Series Axle-Back Exhaust (05-10 GT, GT500)

    Flowmaster Outlaw Series Axle-Back Exhaust (05-10 GT, GT500)
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        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 2005-2010 GT, Bullitt, and Shelby GT500

        Product Resources

        Customer Photos (75) Customer Reviews (100+) Questions (40) & Answers (13)

        Review & Installation Video

        Review & Install Video

        Hey everyone I’m Justin with AmericanMuscle.com, and today we’re going to be breaking down the Outlaw series Axle-back from Flowmaster for the 2005-2010 Mustang GT. Flowmaster calls this their most aggressive Axle-back system available for the late model 46 Mustangs. This entire kit centers around these two outlaw series mufflers, which to the casual observer, hardly resemble mufflers at all, but rather highly engineered resonant tubes, which are responsible for that super aggressive tone. Like many other Flowmaster kits the Outlaw series features 409 grade steel construction and 2.5” mandrel bent tubing. It also features this very sleek black finish, which is going to be great at resisting corrosion. Everything exits out of these dual 4” polished tips, embossed with that classic Flowmaster logo. Installation of this Axle-back is very straight forward and should only take you about an hour using some basic hand tools. Now let’s hear how the Outlaw series from Flowmaster sounds compared to your factory exhaust.

        Super Aggressive Flowmaster Sound. Give your 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.

        Quality Construction. Constructed from durable 2.5" 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 2005 to 2010 GT, Bullitt and the 2007-2010 Shelby GT500 Mustangs for both great looks and great sound.

        Technical Note: Americanmuscle recommends adding the 2005+ Mustang 304 Stainless Steel Exhaust Hanger Kit from the drop down option above, to provide more strength, stability and a cleaner installed appearance. If you have a 2007 Mustang you may need the kit for correct installation.

        Fitment: 2005 2006 2007 2008 2009 2010 Details

        What's in the Box
        • (2) Muffler assemblies
        • (2) Clamps
        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: 2005-2010 GT, Bullitt and Shelby GT500
        Will it fit my Mustang?

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        Customer Photos (75) Submit Your Photo

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        40 Questions / 13 Answers

        Ask a Question

        SLPLOUNDMOUTH OR FLOWMASTER OUTLAWS DID HE HAVE A BIG DIFFERENCE BETTEWN THE SLP LOUNDMOUTH AND THE OUTLAW. THE FLOWMASTER OUTLAW IS IT REALLY LESS LOUND THAN SLP LOUNDMOUTH I HAVE A GT 2005, AND I REALLY DONT KNOW WITCH ONE BUY. WHICH ONE IS GONNA BE THE BEST FOR SOUND AND PERFORMANCE. WITCH PART I COULD JOIN TO THE OUTLAW FOR INCREASE SOUND AND PERFORMANCE THANKS

        echellon

        • Outlaw is plenty loud all by itself. If you want to amp it up try some long tube headers paired with an h pipe. But trust me they're good all by themselves

          Cableguy500

        Show 3 more answers Helpful (9)

        How do these sound on a V6 with true dual? Do you have a sound clip available?? I removed the X brand because of cabin drone... will these create a drone on the V6? Thanks

        UncleJ

        • I have sound clips of a 2009 V6 with the ford racing dual exhaust that uses a true dual setup and the same mufflers as the bullett mustang, and the Flowmaster Outlaw. The Outlaw provides a much deeper throat tone to the exhaust making it more like a V8 sound. It has a little bit of drone at certain RPM's however it really gives the V6 a muscle car sound. The closest thing I can relate it to is the new Boss 302 Laguna Seca. IT SOUNDS AWESOME!!!!

          luftwaffer

        Show 2 more answers Helpful (5)

        I have the Pypes muffler deletes on my 05. Are these Flowmaster Outlaw axle back louder and have a deeper sound than the Pypes muffler delete's? Cant really hear the difference between the video's

        PATRICK95GT

        • The Pypes Muffler-Delete Axle-Back Exhaust (05-10 GT, GT500), item # 20022, (http://www.americanmuscle.com/pypes-2005-gt-muffler-delete-axel-back.html) may have a slightly higher pitched sound than the Flowmaster Outlaw Series Axle-Back Exhaust, The Flowmaster's are going to have a very deep sound that is also loud. It also depends on what other exhaust mods you have made. Different headers and mid pipe will drastically change the sound of the car as well.

          AshleyK

        Helpful (1)

        Do the Flowmaster Outlaw series Axle-Back Exhaust add horse power to your Mustang.

        2Mac

        • That is a big yes and they sound real good and meaty.

          RonN

        Show 2 more answers Helpful (1)

        Will the Flowmaster Outlaw Exhaust pass Pennsylvania state inspection?

        Loudmouth

        • The Flowmaster Outlaw Series Axle-Back Exhaust will be legal in all states for inspection.

          Ricky36

        Helpful (0)

        will these outlaw exhaust pipes pass smog

        steveh

        • We suggest checking with your local authorities to see if the Flowmaster Outlaw Series Axle-Back Exhaust is legal in your area.

          AshleyK

        Helpful (0)

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        Customer Reviews (100+) Write a Review

        Overall Rating 4.9

        out of 5 stars

        Installation Time:Afternoon

        Installation Cost:0-$100

        • Loudness / Volume 4.816456 4.8
        • Exhaust Note 4.873418 4.9
        • Fit & Finish 4.598101 4.6
        • Bang For Your Buck 4.761905 4.8



        • 5/5

          April 14, 2018

          Lound and tunder

          Great exaust they sound so good really happy with theis product

          RomanF

          Year: 2010 Submodel: GT

          Helpful (0)

        • 5/5

          Installation Time: Less than 1 Hour

          April 11, 2018

          Freaking awesome !!

          Brought the car to life. Awesome deep throaty sound. Sounds amazing

          MichaelM

          Year: 2010 Submodel: GT

          Helpful (0)

        • 5/5

          Installation Time: Shop Install

          Installation Cost: $250-$500

          April 09, 2018

          Stormtrooper V6

          I got a 2007 mustang v6, with this product it sounds better then what most would think it would. The guys at the shop was amazed when they first started it up. The outlaws are a way to go with a v6 or a V8. My system is loider then my buddy's 2007 mustang GT with the borla ataks.

          DylanE

          Year: 2007 Submodel: V6

          Helpful (0)

        • 5/5

          Installation Time: Less than 1 Hour

          April 03, 2018

          Great Exhaust

          One of the best Exhaust I have had for that price is the best

          MathewK

          Year: 2006 Submodel: GT

          Helpful (0)

        • 5/5

          Installation Time: Less than 1 Hour

          March 25, 2018

          Flowmaster Outlaw

          This axle-back exhaust sounds absolutely fantastic! For just being an axle-back, it is very loud. If you are planning on adding x-pipes to this, be prepared for your neighbors to hate your car

          HunterW

          Year: 2009 Submodel: GT

          Helpful (0)

        • 5/5

          Installation Time: Less than 1 Hour

          March 24, 2018

          Great bang for your buck

          The outlaws are a bit on the expensive side but when you install them and start driving you will forget about the 500 bucks you just dropped and smile ear to ear. The stock gt exhaust is trash, everyone knows that. The outlaw system brings out a loud growl from your v8 with minimal droning at highway speeds and is an easy install with a proper lift. Very happy with this purchase.

          Jordan

          Year: 2010 Submodel: GT

          Helpful (1)

        • 5/5

          Installation Time: Less than 1 Hour

          March 19, 2018

          Simply the BEST!!!!

          Second time around with these Outlaws......a pair for my '06 and '07. Easy as Plug and Play. No better sound out there!!

          Broakie56

          Year: 2006 Submodel: GT

          Helpful (1)

        • 5/5

          Installation Time: Shop Install

          Installation Cost: $100-$250

          March 11, 2018

          Great Product

          Very loud and aggressive exhaust all around but very reasonable cruising. Also cold starts sound amazing

          ThomasL

          Year: 2010 Submodel: GT

          Helpful (2)

        • 5/5

          Installation Time: Less than 1 Hour

          March 09, 2018

          Great sound

          Third exhaust I purchased . This was the by far the best. Had jba too quiet. Had pypes muffler delete too loud and vibrate. Running x pipe with cats jba

          Saleena07

          Year: 2007 Submodel: GT

          Helpful (2)

        • 5/5

          Installation Time: Less than 1 Hour

          Installation Cost: 0-$100

          March 07, 2018

          great sound

          Easy to install. Sounds great. took a little over an hour. Love it!!

          ShanonD

          Year: 2007 Submodel: GT500

          Helpful (2)

        • 5/5

          Installation Time: Less than 1 Hour

          February 19, 2018

          Overall Great Purchase!

          Decided to go with these as they had great reviews. The sound when driving is perfect, although they weren't as loud as I was hoping. I had a shop install them and I have scraping on my bumper on the passenger side muffler. Can't tell for sure if it's the shop's fault or not but that is why I gave it a 4/5 for Fit and Finish. Cold starts are also very loud. :)

          TrevorR

          Year: 2008 Submodel: GT

          Helpful (2)

        • 5/5

          Installation Time: Shop Install

          Installation Cost: 0-$100

          February 16, 2018

          Just buy them!

          Absolutely love the outlaws. I Was nervous with how it would sound at first but now that they are installed its the perfect mustang sound.

          GordonJ

          Year: 2006 Submodel: GT

          Helpful (2)

        • 5/5

          Installation Time: Less than 1 Hour

          February 15, 2018

          Sounds Excellent

          Installed on my 2006 Mustang GT and I am very satisfied. I wanted a deep throaty sound. The tone is excellent. I can't stop driving it....i look for reasons to take off down the road lol....Gonna be a fun Summer. Now for the CAI install.

          MartinT

          Year: 2006 Submodel: GT

          Helpful (2)

        • 5/5

          February 14, 2018

          Loud

          I like the sound it took under an hour to install good parts i would say others should take a good look at these......,,,

          JohnO

          Year: 2005 Submodel: GT

          Helpful (2)

        • 5/5

          Installation Time: Less than 1 Hour

          February 08, 2018

          Great Sound and Easy Install

          Installed these along with Stainless Works 3" H-Pipe and High Flow cats. These sound amazing. Nice old school sound. East to install.

          Overkill

          Year: 2010 Submodel: GT500

          Helpful (2)

        • 5/5

          Installation Time: Afternoon

          January 29, 2018

          Excellent - just right

          Not too loud, just the right rumble and power. Reading the other install tips on these posts helped a lot. It was a fun project.

          ScottM

          Year: 2008 Submodel: GT

          Helpful (2)

        • 5/5

          January 29, 2018

          Awesome

          This exhaust is super aggressive if you want your neighbors to know your home this is the exhaust for your!

          DanielB

          Year: 2009 Submodel: GT

          Helpful (2)

        • 5/5

          January 26, 2018

          Outlaw mufflers

          I had 3 other mufflers on my 09 GT 500 and the outlaw axle backs with the exhaust tips sound the best

          AndyI

          Year: 2009 Submodel: GT500

          Helpful (2)

        • 5/5

          Installation Time: Less than 1 Hour

          January 26, 2018

          Sweet

          Badass exhaust gives your car a loud deep muscle car tone

          BooneG

          Year: 2008 Submodel: Bullitt

          Helpful (2)

        • 4/5

          Installation Time: Afternoon

          January 24, 2018

          Deep rumble

          Has a deep rumble and sounds real good, really enjoy just had a little trouble with install, but that’s because did it on my own with not so many tools

          Noah

          Year: 2006 Submodel: GT

          Helpful (2)

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