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Kooks High Flow Catted X-pipe (11-14 GT w/ Long Tube Headers)

Item 65504
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    Features, Video & Details

    • Required for Kooks Long Tube Headers
    • Improves Exhaust Flow and Sound
    • Raspy Race Car Growl
    • High Flow Catalytic Converters Included
    • 3" to 2.75" Tubing
    • Mandrel-Bent 304 Stainless Steel Tubing
    • Fits 2011-2014 GT Mustangs

    Review & Installation Video

    Review & Install Video

    Increase Performance. Add even more horsepower and torque to the rear wheels of your 5.0 Coyote Mustang with a Kooks Catted Shorty X-pipe. The Kooks Catted X-pipe features high flow race catalytic converters to increase overall performance. This Kooks X-pipe is specifically designed to be used with Kooks Long Tube Headers.

    Race Car Growl.
    This free flowing Kooks X-pipe for the 2011-2014 GT Mustangs not only increases power, but it also adds a crisp raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

    Quality Construction. Manufactured from 3" diameter mandrel bent 304 stainless steel tubing, Kooks X-pipes feature a merged "X" crossover for superior exhaust flow.

    Application.
    This Kooks Shorty Catted X-Pipe is specifically designed to fit the 2011-2014 5.0L GT Mustangs with Kooks Long-Tube Headers installed. The step down to a 2.75" outlet allows for use of the OEM exhaust. 

    Fitment: 2011 2012 2013 2014 Details

    MPN# 11413200

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (1) X-pipe
    • (2) catted down pipes
    • (2) Clamps
    Installation Info
    Tech Specs
    Mid Pipe Specifications
    Style Mid Pipe: Shorty "X" Type Headers Required: Long Tube
    Piping Material: 304 Stainless Steel Piping Size: 3"
    Catalytic Converter: "Yes" Fitment: 2011-2014 5.0 GT Mustangs
    Will it fit my Mustang?

      Customer Photos (2) Submit Your Photo

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        Questions & Answers (16)

        5 Top Rated Questions

        What kind of catback? So I have full long tube headers from kooks and z pipe from kooks. Should I buy a catback? I don't want any drone or want it too loud. Since the x pipe is a 3" does the stock catback fit? With Stock axle back, need advice please help thank you

        • Your stock catback will fit just fine into the x-pipe. The odds of having drone occur with your stock catback are slim to none since your stock catback is designed to keep noise at a bare minimum. As far as whether you should keep your stock catback, that's up to you. But to get the full effect of your investment into one of the best header/xpipe set ups on the market as far as performance, you should definitely do a catback, or at bare minimum an axleback. By doing this, you will be completing a smooth flow of air through your exhaust giving you the performance we all crave, but also give you the sound that you and your mustang deserve. I personally run the Corsa Extreme Axleback and cant say enough great things about it. I hope this helps.

        Helpful (3)

        Will this fit up to a borla cat back s types, I know I may have to take out the x pipe but would it fit still?

        • Yes, this will work with the Borla S Type exhaust.

        Helpful (1)

        Check Engine light If I installed this catted X-pipe with 1/ 7/8 LT KOOKS headers without PCM tuning will the check engine light fire up as the or it will not ?

        • Yes, you will get a CEL but it won't damage anything. The rear O2 sensors are going to get an under efficiency reading so they will need to be turned off or a tune will need to be written to trim out the engine parameters so you run at efficiency level.

        Helpful (1)

        Will these cats hold with boost? I saw that Pypes have high flow cats for ProChargers wondering if the kooks would work?

        • It will honestly depend on with supercharger/turbo kit you plan to go with. We recommend checking with Kooks.

        Helpful (0)

        Will this mid pipe fit 15-17 kooks 1-7/8. long tubes just the actual catted parts not the x-pipe connecter.

        • Unfortunately this will not work with the 15-17 Mustang GT. Only the 11-14 models.

        Helpful (0)
        Post Your Question
        10 More Questions
        Does the cats hang above the frame rail ? or only the catless ? thanks 1 answer
        Will this pass emission inspection in NJ? 1 answer
        Okay I have stock cats on my car and flowmaster outlaw cat back on the car want high flow cats and a little less drone and will eventually do long tubes my outlaws are 3 in all the way will the outlaw axle backs work with these or no? And if installed will this throw a mil? Still need to pass inspection and if this won’t work recommendations on different set up for reasonable price 1 answer
        California legal? 1 answer
        What tuner will work best with the kooks 1 7/8 and catted x pipe? 1 answer
        What tuner will work best with these headers? 1 answer
        I have an off-road h pipe, will this one be a lot quieter or just a little bit? Tired of it being “too loud” since it’s a daily driver and I leave for work at 6am 1 answer
        Do I need to buy O2 Sensors for the Kooks 1 3/4 Longtube headers with the high flow cat mid/X pipe?? because ill have the car dyno tuned at Jms Chip Performance since I live in Mississippi. After installation. 1 answer
        I dont see any talk about o2 extensions, do you need them with the high flow catted x pipe or not? thanyou ! 1 answer
        Whats the chances of passing smog with these 1 answer

          Customer Reviews (17) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Full Day

          Installation Cost:$250-$500

          • Loudness / Volume 4.529412 4.5
          • Exhaust Note 4.823529 4.8
          • Fit & Finish 4.882353 4.9
          • Bang For Your Buck 4.705883 4.7



          • 5/5

            Installation Time: Shop Install

            Installation Cost: $500-$1000

            September 19, 2018

            Quality part!

            Unboxed the well packaged x pipes. Noticed right away the high end quality. Very pleased with the purchase.

            SeanH

            Year: 2013 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $500-$1000

            July 07, 2018

            Superb Quality

            I bought the catted X-Pipe in conjunction with the Kook’s long tube headers, fitment is spot on! The high flow cats also help eliminate any of the nasty fumes that you might get with an off-road setup which is great as the car is daily driven. Excellent quality all around. The only thing worth noting especially if your car is lowered is that you will lose about an inch or so of ground clearance due to the circumference of the x-pipe which can scrape going up driveways etc if not careful. But with the headers the outstanding sound and power is definitely worth the trade off! And if I had to do it over I would buy this mid pipe again and again, pricey but well worth it! 10/10

            Roland

            Year: 2012 Submodel: GT

            Helpful (7)

          • 4/5

            Installation Time: Afternoon

            March 25, 2018

            Awesome stuff

            Bought car already had full kooks longtube headers and rest all the way to tips problem was need to pass emissions and was smelling bad exhaustin house after parking. Bought the cats xpipe went right into place and no issues quality pice and fit was bolt onto existing pipes

            ChrisF

            Year: 2013 Submodel: GT

            Helpful (10)

          • 5/5

            Installation Time: Weekend

            June 18, 2017

            Header and X-pipe upgrade

            Kooks long tube headers and catted X-pipe are beautifully made and fit well together. Really love the sound of of this set up. Sounds like a race car now and a nice power boost. Can't wait for the next upgrade.

            Michael

            Year: 2012 Submodel: GT

            Helpful (8)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $500-$1000

            June 09, 2017

            Can't beat Kooks

            Perfect fit, excellent flow. Really brings the car alive. Well worth the price!

            MichaelM

            Year: 2014 Submodel: GT

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            February 20, 2017

            Coyote 5.0

            Best product out there worth the buck :) Sounds amazing with my MagnaFlow axel backs. You can feel the power.

            AlexR

            Year: 2014 Submodel: GT

            Helpful (9)

          • 5/5

            Installation Time: Afternoon

            February 07, 2017

            Excellent Catted X Pipe

            Perfect X-Pipe that matches up to Kooks long tube headers without any issues. Easily installed once the long tubes are in place.

            14DIB

            Year: 2014 Submodel: GT

            Helpful (10)

          • 5/5

            Installation Time: Full Day

            October 13, 2016

            Kooks Catted X-pipe

            Perfect fit for my Kooks Long tube headers the excellent quality that goes into making these really shows. You get what you pay for. Perfect !!!!!!!

            jimaki141

            Year: 2013 Submodel: GT

            Helpful (10)

          • 5/5

            Installation Time: Less than 1 Hour

            September 15, 2016

            Coyote swap in a 2007 GT

            This is the perfect fit for a coyote swap i put in a 2015 coyote engine in my 2007 GT with Kooks long tube headers and I had to do no modification for both.

            KS228

            Year: 2007 Submodel: GT

            Helpful (13)

          • 5/5

            Installation Time: Full Day

            March 15, 2016

            kppk,s catted x-pipe (11-14(gt with long tuybe headers

            these are great ,a guess they had to take the motor mount off to install them but everything went well ,got the car back and sounds great

            froggie64

            Year: 2013 Submodel: GT

            Helpful (11)

          • 5/5

            Installation Time: Weekend

            August 27, 2015

            Took nearly a week to install

            I started working on it a week ago. Finally got it back together last night. Took over 20 hours of my time. You may think you have a full arrangement of tools but this will expose every tool you lack. You need every length extension there is in 1/4,3/8, and 1/2 inch. Every step fights you. Something as simple as reinstalling the starter. The top bolt was nearly impossible to tighten. I'd recommend to put the engine mount in place but install the starter before bolting it in. The a/c lines were in the way. The o2 sensor disconnect was difficult. I have small hands and barely could squeeze in there. Another tip: disconnect the front sensors before raising the engine.

            drewk85

            Year: 2012 Submodel: GT La Crescent, MN

            Helpful (9)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            January 20, 2015

            best quality out there

            Highly recommended this brand is the best sound out there

            tukuko

            Year: 2014 Submodel: GT Lehigh Acres, FL, USA

            Helpful (8)

          • 5/5

            Installation Time: Afternoon

            December 18, 2014

            Best on the market

            If you are looking to keep the cats in your exhaust system and really have that x-pipe sound that you're looking for, then this is the one for you. This is my second Kooks set up I have installed, one on a buddy's car and this one on mine and I wouldn't choose any other. It is a little pricey but you are paying for what you are getting. Makes the Coyote sound as it should.

            Dakotacoy

            Year: 2013 Submodel: GT Dallas, TX, USA

            Helpful (8)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            November 22, 2013

            Amazing product money well spent love it!!!

            It's like driving a whole new car sound is amazing and car has a lot more power!!!!!

            Soldierpage69

            Year: 2014 Submodel: GT Dallas texas

            Helpful (10)

          • 5/5

            Installation Time: Afternoon

            October 19, 2013

            Great product for the most part

            Bought this to replace the cats on my '11 GT. BE AWARE: if you have Kooks long tube headers then you will only be able to use these pipes with the headers. Easy install and good fit. Overall quality is excellent. Only problem is I wish I could buy the catted legs by themselves with out getting a new x-pipe too. AM service is excellent. Pipes arrived two days after I placed my order. Will definitely buy from AM again.

            boGT11

            Year: 2011 Submodel: GT

            Helpful (11)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            August 01, 2012

            Kooks

            This catted x-pipe looks great and delivers the sound your looking for and makes a nice note inside the car that wont drive you crazy of course it has to be paired with the Kooks headers so if thinking catbacks be careful with your choice. I know some dont like the drone so watch the cat-back issue and dont purchase a super aggressive system because it will be be super loud. AM have all the good products and this is a superior item.

            bradd33

            Year: 2011 Submodel: GT

            Helpful (8)

          • 4/5

            Installation Time: Afternoon

            September 14, 2011

            Excellent Catted X-Pipe

            I had the Kooks Off road X-pipe on and it was just to loud on start up for the apartment complex I live in. The Kooks catted x-pipe made it more docile and quiter on start up. But didn't ruin the exhaust note while driving, or taking it to redline. Only negative is that there is a potential that the cats may not work as efficient as the ecu requires and throw a DTC code of P0420 and P0430. I was told by Bama that some of the Kooks catted x-pipes work efficient enough and some do not. But with a quick tune change to turn of the rear O2 sensors, everything is great.

            dacobra04

            Year: 2011 Submodel: GT Renton, WA.

            Helpful (14)

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