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SLP Loudmouth Axle-Back Exhaust (05-10 GT, GT500)

100+ Reviews
Our Price

$361.95

  • Item #23013
  • MPN# M31014

  • Market Price $399.99
  • You Save 10% ($38.04)
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Customer Photos
Features
  • Rich, throaty exhaust sound
  • 3.5" polished 304 stainless steel tips
  • Fits 2005-2010 GT and Shelby GT500 Mustangs
Description
Super Aggressive Exhaust Rumble. This SLP Performance Parts Axle-Back System eliminates the restrictive factory mufflers entirely from the 2005-2010 Mustangs, drastically reducing back pressure for enhanced power and aggressive sound.

Rugged, Durable Construction. SLP's Axle-Back system is made from 2.5" mandrel-bent 409 stainless steel tubing, which has excellent flow characteristics and features pre-welded hangers for simple installation. The hand polished, 3.5" dual wall tips give a show quality muscle car appearance to the rear of your Pony.

Application. The SLP Loudmouth Axle-Back is designed to fit the 2005-2010 GT, 2008-2009 Bullitt, and 2007-2010 Shelby GT500 Mustangs.

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

Won't fit? Add an exception

What's in the Box
Hardware included:
  • (4) Four Clamps
Installation Info
Tech Specs
Axleback Exhaust Specifications
Piping Material: 409 Stainless Steel Tip Material : Polished 304 Stainless Steel
Piping Size: 2.5" Tip Size: 3.5"
Muffler Type: Straight Through / Resonator Fitment: 2005-2010 GT Mustangs
Will it fit my Mustang?
  • Bullitt - 08, 09
  • GT - 05, 06, 07, 08, 09, 10
  • GT500 - 07, 08, 09, 10

Most Helpful Reviews

5/5
2010 GT w/ SLP

Very loud when you step on it but I also passed a couple of police roadblocks with SLPs and they didn't say a word. It truly depends on how you drive. But even when it is quiet it really sound powerful ...

Read More
Helpful (30)

5/5
2007 Shelby GT500

I hesitated buying these because I thought they would be to loud, but I'm glad I got them. Not only is the sound just awesome, but it's not obnixious loud like I originally thought. Don't get me wrong ...

Read More
Helpful (42)

Read All 100+ Reviews
Overall Rating 4.9 out of 5 stars

Customer Photos (64) View All Photos

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10 Questions / 5 Answers

Ask a Question

What else do I need to put these on my 08 v6 mustang? I was thinking about getting a Pypes cat back exhaust system with out the mufflers and put these on. Are you guys selling any h-pipes or any materials that will let me use these? Dont want to buy from another site.

tcharvey7 Year: 2008 Model: V6

  • In order to use these SLP Axle-backs, you will need a conversion kit; we have two easy options for you! You can purchase the Pypes True Dual Exhaust X-pipe Kit, please see the link attached below. This kit allows you to reuse your stock catalytic converters and use any GT Axle-back of your choice. If you wanted a kit with high flow cats included, you could install the BBK True Dual Exhaust Conversion Kit, also shown below, and use the GT Axle-back of your choice. Hope this helps!

    LisaS Year: 1992 Model: GT

    Good Answer (1)

Question Resolved

what do i need for an SLP loundmouth exhaust set up? i have a 06 gt mustang but i want something to really make my mustang sound mean. if i bought the SLP Loundmouth Axle-Back exhaust an went with a SLP catted X-pipe what eles would i have to buy?

1mean06 Year: 2006 Model: GT

  • I have the SLP Loudmouths on my 05 GT with the stock cats and H - Pipe and the car sounds like a beast! I love these mufflers. They have the best low throaty rumble in my opinion, and when you open her up they ROAR! In all honesty, these mufflers are ALL you need for one mean sounding 'stang. You WILL NOT be disappointed with the setup you mentioned, as long as you like loud, mean, and slightly obnoxious muscle car rumble!

    XeroVolume Year: 2005 Model: GT

    Good Answer (0)

Show 1 more answer Question Resolved

Do you get any extra horsepower out of this exhaust?

JoshP Year: 2005 Model: GT

  • If your replacing your stock axel backs, you may gain 3-5 HP. But if you have other bolt on`s, you`ll notice a larger gain. Mostly, you will just love the exhaust note!

    jb14 Year: 2008 Model: GT

    Good Answer (0)

Show 1 more answer Question Resolved

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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 4.844037 4.8
  • Exhaust Note 4.834862 4.8
  • Fit & Finish 4.633028 4.6
  • Bang For Your Buck 4.559633 4.6



  • 5/5

    May 26, 2010

    2010 GT w/ SLP

    Very loud when you step on it but I also passed a couple of police roadblocks with SLPs and they didn't say a word. It truly depends on how you drive. But even when it is quiet it really sound powerful and growly. I'm entirely satisfied with the sound, the delivery and how easy it was to install. I recommend this to any stang addict who'd like a muscle car tone.

    Malodorant

    Year: 2010 Model: GT

    Helpful (30) (1)

  • 5/5

    May 28, 2010

    SLP 2008 GT

    After doing extensive research into what axle back exhaust to get I finally decided on the SLP Loudmouths. This Truly brings out the sound of your V8. Not to say the stock mufflers were bad, but after hearing these things, I don't think I will ever go back. Before it purred, now it spits and pops. Once things heat up it really isn't obnoxiously loud. You can hear it faintly as you cruise down the road, but put your foot into it and watch out! You will not forget they are there! Install was easy. I didn't even have to jack the car up. It might be slightly easier if you do but it's not required. You will notice it is easier to put the SLPs on than it is to take the stock ones off. Alignment can be a little tricky. Make sure you don't tighten everything but rather have it lose so you can position things correctly the first time through. Steve McQueen would be proud of these!

    Douglas Kirk

    Year: 2008 Model: GT

    Helpful (32) (3)

  • 5/5

    April 27, 2010

    2007 Shelby GT500

    I hesitated buying these because I thought they would be to loud, but I'm glad I got them. Not only is the sound just awesome, but it's not obnixious loud like I originally thought. Don't get me wrong they are loud but it's not to much. Chances are if your looking for an exhaust you trying to increase the sound and this is the one you need. Very raspy deep tone and I can tell you first hand it will turn heads. This exhaust will transform the attitude of your ride. Installation was a breeze, however it does take a little bit of time to get them just right.

    JohnH

    Year: 2007 Model: GT

    Helpful (42) (6)

  • 5/5

    May 12, 2009

    Beast Maker

    Hands down a fast way to make your Stang sound like a Stallion on Roids. Order it on the 11th got it on the 12th. Forty five minutes later i am making ricers cry.

    Gene

    Helpful (25) (4)

  • 5/5

    March 25, 2010

    The Exhaust from the MUSTANG GODS!!!

    If Jesus Christ had a Mustang these are what he would have on it! Amazing sound and LOOOOUUUUDDDDDD! You can hear me coming before you see me and when im gone its like i never left the parking lot!

    Adam DeWitt

    Helpful (17) (4)

  • 5/5

    Installation Time: Less than 1 Hour

    May 22, 2012

    OH-MY-GOD!!!

    At first i was hesitant about buying these, i thought they would be too loud inside the car and get annoying at times, but honestly, its not obnoxiously loud inside unless you have the windows down, and it has a great tone to it. I listened to so many youtube videos on this exhaust, but in real life it sounds 100 times better than any video can make it sound!

    nickm2007

    Year: 2007 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 New Jersey

    Helpful (8) (0)

  • 5/5

    August 22, 2010

    Perfect

    Just installed the loudmouth today. Had to wait eight days for shipping because I live in canada but it arrived hastle free. Install took around two hours for me, could be done in less for the experienced wrench man. It was easy and when I fired it up ohhhh man it sounds sweet. Just a note if your picky like me you should start with the drivers side first as it helps with alligning the fitting for the other side so they both stick out the exact length. Such a great product and really makes you feel like your driving a muscle car. Now I need more thanks AM

    Josh B

    Helpful (11) (3)

  • 5/5

    Installation Time: Less than 1 Hour

    September 21, 2011

    This product has a great sound.

    The SLP Loud Mouth exhaust has a great sound if you like the old school muscle car sound. The install was easy and the fit and finish was excellent but I highly suggest the following the instructions and not tightening everything up till last for adjustments.

    Mixer72

    Year: 2007 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Charlotte, NC

    Helpful (5) (0)

  • 5/5

    February 11, 2011

    05 Mustang GT

    Rsearched exhaust on this website for many months and couldn't make up my mind...finally i pulled the trigger and bought SLP loudmouth and boy did i make the RIGHT choice...my Mustang sounds awesome...has the growl i was looking for...not to mention the amount of people who stop and stare as i go by...if you like attention this is the exhaust for you...easy to install...took about an hour....thanks american muscle...

    Joe V

    Year: 2005 Model: GT Driving Style: Daily Driver

    Helpful (4) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    September 06, 2012

    Classic Mustang throaty Sound

    I just got my SLP loudmouths and I am very pleased. The fit and finish were top notch. Installation actually took me about 2 hours but that was because I was interrupted about 10 times during the install. The hardest part of the whole installation was getting the old mufflers off. Once installed, the magic begins. The sound is absolutely gorgeous. I was worried at first because of all the online videos make them sound terrible. I can say right now that these videos do NOT do any justice for these pipes. While I thought the price was a little steep, it is nowhere near as high as other brands. If you are budget minded and looking for that old school sound, then worry no more. Buy these axle back pipes. You will be glad that you did.

    Top 250 Contributor

    Brice27332

    Year: 2007 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 NC

    Helpful (3) (0)

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