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Magnaflow Competition Cat-Back Exhaust - 2.5in. (05-09 GT, GT500)

26 Reviews
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  • Item #48020
  • MPN# 15883

  • Market Price $849.99
  • You Save 9% ($77.56)
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Product Videos Customer Photos
  • Aggressive Muscle Car Sound
  • Stainless Steel Construction
  • 2.5" Mandrel-Bent Tubing
  • 4" Polished Stainless Steel Tips
  • Competition Mufflers
  • Fits 2005-2009 GT, Bullitt And GT500 Mustangs
Free Flowing Exhaust. Magnaflow delivers the ultimate free flowing exhaust for the 2005-2009 GT, Bullitt and GT500 Mustangs with this Competition Cat-Back Exhaust. By eliminating power robbing restrictions, more horsepower and torque is produced where it belongs - at the rear wheels.

Aggressive Muscle Car Sound. The Magnaflow Competition Cat-Back Exhaust System features a set of straight-through bullet-style competition mufflers to give your Mustang that loud, aggressive exhaust note of muscle cars of yesteryear.

Quality Magnaflow Construction. Each piece of the Magnaflow Competition Cat-Back System is constructed from 2.5" mandrel bent stainless steel tubing for long life and a perfect fit. The system features (2) competition straight-through mufflers as well as (2) brightly polished 4" stainless steel tips that exit from the stock location for impressive good looks.

Application. Made as a direct bolt on, this Magnaflow Competition Cat-Back Exhaust System will bolt straight up to the factory 2.5" Mid Pipe without any modifications required on the 2005 to 2009 GT, Bullitt and Shelby GT500 Mustangs to give it a deep aggressive sound.

Note: Coupon codes cannot be applied to this product.

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 Details

What's in the Box
  • (2) Tail Pipes
  • (2) Competition Mufflers
  • (2) Clamps
Installation Info
Tech Specs
Cat-Back Exhaust Specifications
Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 2.5" Tip Size: 4"
Muffler Type: Straight-through Fitment: 2005-2009 GT, Bullitt, GT500
Will it fit my Mustang?
  • Bullitt - 08, 09
  • GT - 05, 06, 07, 08, 09
  • GT500 - 07, 08, 09

Most Helpful Reviews


Extremely awesome exhaust. Threw it on my \'07 Mustang GT in a matter of an hour, and now enjoying the deep, loud sound the 281 produces. I don\'t even listen to music in my car anymore, cause the exhaust ...

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Helpful (7)


Nice and loud!!! Old school sound. I get complimented all of the time. Along with long tube headers and off road h pipe, I wake the neighbors all of the time.

Helpful (6)

Overall Rating 4.6 out of 5 stars
Read All 26 Reviews

Review & Install Video

Hey I’m Justin with, and I’m taking a closer look at Magnaflow’s Magnapack Cat-Back exhaust fitting the 05-09 Mustang GT, and GT 500. The Magnapack gets its name from these two Bullitt style mufflers which are a throwback to the classic glass packs of the 60’s and 70’s hot rod era, and the sound you get is going to reflect that and you’ll definitely hear that classic muscle car rumble. The entire system features full stainless construction including the 2.5” mandrel bent tubing, the straight through design Magnapack mufflers, and finally the large 4” brightly polished tips. Getting this catback installed isn’t really that big of a job and should take you roughly two hours from start to finish using basic hand tools. Now let’s hear how the Magnaflow Magnapack Cat-Back sounds compared to your factory exhaust.

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3 Questions / 3 Answers

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Curious Im going to be getting an 05-09 GT soon and I've been looking on your site for a long time now and been trying to piece together the best exhaust. My question is, can this combo work with this Magnaflow Magnapack Catback? ---> BBK Ceramic Long Tube Headers & BBK Shorty Catted X-Pipe. Thank You


  • You shouldn't run into any issues bolting up the BBK shorty x-pipe with this Magnaflow Catback or any other brand catback. The main concern when doing an exhaust upgrade with long tubes is to stick with the same manufacturer. So if you are doing the BBK Long Tubes, you will definitely want to stick with the BBK Shorty mid-pipe, which will ensure the best fitment! From the mid-pipe back, you can pretty much pick and choose whichever catback best suits your style! If you want any tips or advice on different set ups, give us a call! We'd be more than happy help you out!


    Good Answer (3) (0)

Question Resolved

do i need a x-pipe or h-pipe with this product. do i need a tuner when installing? the car has a 5speed manual.


  • No you don't need either when installing this catback. This Maganflow Magnapack will bolt straight up to the factory mid-pipe without any modifications. That being said, if you were to upgrade your stock mid-pipe with an h-pipe or x-pipe, you would increase your total gains. Installing this catback with the stock mid-pipe does not require a new tune. Hope this helps!


    Good Answer (0) (0)

Question Resolved

Will this work with the MAC H-pipe for a V6 dual exhaust conversion? I have an 07 V6 premium with the pony package and am looking to add duals in my car. I really love the magnaflows and am hoping they can capture that deep, classic, throaty exhaust sound of classic muscle cars. I would like to pull the factory Y-pipe and add a MAC H-pipe, keep the stock cats and then add this on for the true dual exhaust.


  • Yes, the MAC Cut & Clamp Pro Chamber Mid-pipe (05-10 V6) can be installed on your 07 V6 along with this Magnaflow Magnapack Catback. It would reuse your stock cats and would be a great combination. Hope this helps!


    Good Answer (0) (0)

Question Resolved

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Customer Reviews (26) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Weekend

Installation Cost:$100-$250

  • Loudness / Volume 3.857143 3.9
  • Exhaust Note 4.142857 4.1
  • Fit & Finish 4.857143 4.9
  • Bang For Your Buck 4 4

  • 5/5

    February 21, 2008


    Extremely awesome exhaust. Threw it on my \'07 Mustang GT in a matter of an hour, and now enjoying the deep, loud sound the 281 produces. I don\'t even listen to music in my car anymore, cause the exhaust sounds too good. Recommended!!

    Joel Anctil

    Year: 2007 Model: GT

    Helpful (7) (0)

  • 5/5

    September 15, 2009

    Classic Sounding Exhaust

    This exhaust sounds and looks great. Very authentic sound. Those idiots with fart pipes are jealous!

    Jon Novak

    Helpful (6) (0)

  • 5/5

    July 16, 2009


    Nice and loud!!! Old school sound. I get complimented all of the time. Along with long tube headers and off road h pipe, I wake the neighbors all of the time.


    Helpful (6) (0)

  • 4/5

    March 26, 2009

    I wanted flowmasters orignally

    I own a 05\' V6 Mustang, and had a professional install the GT magnaflows to replace my single exhaust mustang. I wanted flowmasters originally, but my mechanic told to to get magnaflows as flowmasters sound raspy on the v6. I unhappilly agreed. I couldn\'t be happier, now that its installed. Quite at idle (good, if a cop pulls up next to you), but has a mean rumble when I rev. Prob gave me 10-15 hp.


    Year: 2005 Model: V6

    Helpful (5) (1)

  • 5/5

    September 20, 2008


    Just added this Catback and it sounds so smooth on my 08 Automatic. Flows good when I am on the highway and turns heads when I am in city traffic.


    Year: 2008

    Helpful (4) (0)

  • 5/5

    October 06, 2008

    Simply Amazing

    This catback system is simply amazing. The sound is so crisp and healthy. I would definitely recommend this to anyone who wants their car to sound amazing. I installed them with BBK long tube headers and a BBK x-pipe. I noticed that after about 2 weeks of driving around, the exhaust has quieted down. It definitely isnt obnoxiously loud, but sounds so good that it turns a lot of heads. Would recommend!!!


    Helpful (6) (2)

  • 5/5

    July 16, 2009




    Helpful (4) (1)

  • 5/5

    October 31, 2010

    Awesome sound. Awesome quality.

    Paired this with Magnaflow catted x pipe. It's loud and sounds great. My car sounds deep and muscley at lower rpms, but in the high range it sounds like a race car. Would recommend to anyone looking for a sound and performance upgrade.


    Driving Style: Daily Driver

    Helpful (2) (0)

  • 5/5

    April 22, 2010

    magnaflow exhaust

    Bought this with the catted x-pipe and the BBK throttle body. The install took about 2 hrs. WOW what a difference this combination makes!!!! This exhaust is so much better than the stock. Not real loud at idle but if you get on it, it really sounds great.


    Helpful (2) (0)

  • 4/5

    May 01, 2010


    Just had this installed this morning and i love it. it has a nice low tone that just roars quality!


    Helpful (2) (1)

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