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Kooks Performance Cat-Back Exhaust (11-14 GT, BOSS)

7 Reviews
Our Price

$1,017.68

  • Item #100516
  • MPN# 11404200

  • Market Price $1,130.75
  • You Save 10% ($113.07)
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Product Videos Customer Photos
Features
  • Aggressive Muscle Car Exhaust Note
  • 3" Oval Race Mufflers
  • 3" Stainless Steel Tubing
  • 4" Polished T304 Stainless Steel Tips
  • Direct OEM Replacement Upgrade
  • Fits 2011-2014 GT and BOSS Mustangs
Description
Aggressive Exhaust Note. Give your 5.0 coyote powered Mustang the loud aggressive exhaust note of a classic 60's muscle car with a Kooks Performance Cat-Back Exhaust system, that features oval stainless steel race mufflers.

Durable Stainless Steel Construction. Constructed from 3" diameter stainless steel tubing for strength and corrosion resistance, this Kooks Performance Cat-Back exhaust system features two high flow 3" Oval Race Mufflers that end with 4" polished T304 stainless steel slant cut exhaust tips.

Application. This Kooks Performance Cat-Back Exhaust Kit is specifically designed to fit the 2011-2014 GT and BOSS Mustangs with the coyote 5.0L 4 Valve V8 engine.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (1) Right muffler assembly
  • (1) Left muffler assembly
  • (1) Right tailpipe assembly
  • (1) Left tailpipe assembly
Installation Info
Tech Specs
Axle-Back Exhaust Specifications
Piping Material: Stainless Steel Tip Material : Polished 304 Stainless Steel
Piping Size: 3" Tip Size: 4"
Muffler Type: Race Muffler Fitment: 2011-2014 GT and BOSS
Will it fit my Mustang?
  • GT - 11, 12, 13, 14
  • Boss 302 - 12, 13

Most Helpful Reviews

4/5
Fitment issue but very nice

Very nice looking system, I had an issue with the system fitting together and had to take the over axle pipe to a shop to stretch the opening for it to fit the other supplied kooks pipe (mid pipe to over ...

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Helpful (1)

5/5
Kooks cat backs awesome fit and sound

The installation overall took less than an hour but getting the stock pipes off was what took the longest. The weight savings were substantial from the stock mufflers. Let's not forget the sound it produced, ...

Read More
Helpful (1)

Read All 7 Reviews
Overall Rating 4.7 out of 5 stars

Video

Customer Photos (7) View All Photos

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1 Questions / 1 Answers

Ask a Question

How is the fitment of the over axle pipes on lowered cars?

Kody

  • This system will work on lowered cars without issue.

    Kooks Headers

    Good Answer (0) (0)

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

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Customer Reviews (7) Write a Review

Overall Rating 4.7

out of 5 stars




  • 4/5

    Installation Time: Less than 1 Hour

    May 02, 2016

    Fitment issue but very nice

    Very nice looking system, I had an issue with the system fitting together and had to take the over axle pipe to a shop to stretch the opening for it to fit the other supplied kooks pipe (mid pipe to over axle pipe). Otherwise it looks fantastic and sounds super aggressive, much louder than I was expecting but very very nice. No drone at highway speeds which is great.

    Jacob

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1

    Helpful (1) (0)

  • 4/5

    Installation Time: Afternoon

    September 02, 2015

    American Muscle Made it right

    I had a shop install my exhaust and it took them a little bit longer since the exhaust came defective from Kooks. They had to open the pipe connections to allow for them to fit up. I called American Muscle and explained the problem and they paid the extra costs the shop charged me to complete the job. This is why I continue to buy from these guys as they make it right. As for the exhaust it looks amazing and sounds great. I wanted something that made the car come alive when WOT and not make it annoying to drive daily. This is the perfect exhaust and I would advise anyone to purchase these.

    Jamestamu

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Austin, TX

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    May 24, 2015

    WOW! More than I could have ever asked for

    I noticed no one has really given a detailed review on these yet so I'm going to give a pretty lengthy one. First install: install is pretty straight forward if you are doing it yourself. It took me about an hour but I had a lift to put it on for the install. They fit as well if not better than the factory exhausts to it's a simple bolt on install. Quality: these exhausts seem to be a very high quality product that will last a LONG time. I just got mine so I can't really speak to it yet. Performance: When taking the factory exhausts off and swapping to these, you can tell that they are significantly lighter weight which is great. Also the piping has less "kinks" / is smoother than factory allowing air to flow less restricted. I did feel a small performance gain after install. Sound: to me, these are the PERFECT exhausts in tone and volume! They have a very deep classic muscle car tone, they don't get that obnoxious raspy note. Volume is significantly louder than stock but is not overbearing when driving and there is 0 drone on the highway. So you can enjoy the new sound when accelerating but don't have a mindnumbing noise the whole time you're cruising. I highly recommend this product, I don't think I could be happier with my purchase.

    SgValor

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 St. Louis, MO

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    December 23, 2014

    Learning to love

    A lot quieter than I was hoping for but the tone is awesome! It's not much louder then stock but car sounds way better! I do still have factory headers and cars.

    Jayman65

    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Atx

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    April 18, 2014

    Kooks cat backs awesome fit and sound

    The installation overall took less than an hour but getting the stock pipes off was what took the longest. The weight savings were substantial from the stock mufflers. Let's not forget the sound it produced, it's what a v8 should sound like!

    n9netn9ne

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Ferndale, WA, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    June 06, 2014

    I really enjoy the noise

    The product fit well and sounds great. I can tell a difference in the power as well

    Scott81

    Year: 2014 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 Proctorville, OH, USA

    Helpful (0) (1)

  • 5/5

    August 12, 2016

    Sweet sound without drone or bark

    My wife and I set out to find the perfect set of pipes for our convertible . "Perfect" to us was the sound of a custom Saleen setup with those nice notes and tones, no rasp, no ping, none of that rice burner buzz... BUT - we wanted a little bit more aggressive growl down low in the RPM's with solid rumble as you open the car up. Zero drone was required when the top was down. We thought stock was "ok" we just wanted to turn stock up a few notches. These pipes have it all! At idle they sound like a V8 - deep melodic rumbling... without barking - there's nothing obnoxious about them. Stop on the accelerator and you KNOW you have a custom set on - loud but nowhere near racing style... Like, you can put mom in the car and she won't complain about the noise... Deceleration was an added bonus - no pops or cracks in back - instead you get a super cool musical gurgle - it really is cool. At highway cruising speeds of 50-60 the sound is gone - as quiet as stock with the top down. If you are looking for a really sweet sound that focuses on tone and melody and not on decibels and rasp - this is a no brainer upgrade over stock. (Next to an expensive factory "tuned exhaust" option on a new 2016 Camaro or a factory "tuned exhaust" option on a 2015 Stingray - this is much deeper sounding and more musical in the resonance tones / notes... making the Chevy guys look and feel so sad)

    Andy

    Year: 2012 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2

    Helpful (0) (0)

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