Free Shipping On Orders Over $49. Details

Talk to a Mustang Expert
1-877-887-1105
Every day 8:30AM EST - 11:00PM EST
Win 1 of 3 Exhaust Kits! Enter Daily!

Kooks Long Tube Headers w/ Catted X-Pipe (05-10 GT w/ Manual Transmission)

Market Price $1,687.71 You Save 18% ($297.08)
Starting At

$1,390.63

FREE Shipping

  • Item 65500
  • MPN#11313200

    more

Local Install Shops

Quoted installation from $125

View 3 Shops

near 19355 (change)

Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.

Will this fit your Vehicle?

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features, Video & Details

    • Increase Rear Wheel Horsepower and Torque
    • Includes Headers w/ Matching Catted X-Pipe
    • 304 Stainless Steel Construction
    • High Flow Catalytic Converters
    • Free Flowing Mandrel-Bent Tubing
    • Fits 2005-2010 Manual GT Mustangs

    Review & Installation Video

    Review & Install Video

    Improve Horsepower And Torque. The Kooks Long Tube Header and Catted Shorty X-pipe combo kit for the manual 2005 to 2010 GT Mustangs will balance out the exhaust pressure to increase flow over the restrictive factory exhaust system resulting in more horsepower, torque, and better throttle response.

    Quality Construction. Manufactured from 1-5/8" mandrel bent 304 stainless steel tubing Kooks Long Tube Headers are TIG welded for strength, and feature a leak-free ball flange design to fit perfectly into the included 2.5" diameter 304 stainless steel Shorty X-pipe for excellent exhaust flow and performance.

    Recommended Upgrade. To realize the full power potential that this Header and X-pipe combo kit has to offer, AmericanMuscle recommends a custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

    Application. This Kooks Header and matching catted X-pipe combo kit is designed specifically for the 2005 to 2010 4.6L GT and Bullitt Mustangs equipped with a manual transmission. Includes gaskets and 02 extensions.

    Fitment: 2005 2006 2007 2008 2009 2010 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    Hardware included:
    • Headers
    • Mid Pipe
    • Gaskets
    • 02 Extensions
    Installation Info
    Tech Specs
    Header Specifications
    Header Type: Long Tube Finish : 304 Stainless steel
    Type Mid Pipe Required: Kooks Shorty X Fitment: 2005-2010 GT - Manual


    Mid Pipe Specifications
    Style Mid Pipe: Shorty "X" Type Headers Required: Kooks Long Tube
    Piping Material: 304 Stainless Steel Piping Size: 2.5"
    Catalytic Converter: "Yes" Fitment: 2005-2010 GT - Manual
    Will it fit my Mustang?

    You Might Also Like

    Customer Photos (6) Submit Your Photo

    View All 6 Photos

    Questions & Answers (17)

    5 Top Rated Questions

    With the cats in place, is this setup 50 state legal or only 49 state legal?

    • The catalytic converters included in this kit are not legal for use in California.

    Helpful (3)

    ehaust will the kooks header and catted x-pipe combo manual set up hook to my flowmaster ehaust. Also do i have to use that serten type of tunner or can i use any tunner.

    • Yes this exhaust will hook up with your existing mufflers, stock or otherwise. Any tuner will work.

    Helpful (3) Show 2 more answers

    Will this match with the Roush catback exhaust setup?

    • We cannot guarantee that the Kooks Long Tube Headers w/ Catted X-Pipe will work with any of the Roush Cat-Backs because they are designed to bolt to the factory location.

    Helpful (1)

    Will this combo fit with my flow master outlaw axle back exhaust? Is there anything extra I will need?

    • The Kooks Header and Catted X-pipe Combo can be used with any axleback with no issue. There are no additional components required, however a tune is highly recommended.

    Helpful (1)

    Will this fit with the slp loud mouth axel back?

    • This header/x-pipe kit will fit with the SLP loud mouth axle-back exhaust installed.

    Helpful (0)
    Post Your Question
    10 More Questions
    Hello, I'm wondering if this catted system will pass the emissions test. I live in Ontario, Canada ,everything else in my 2006 GT is stock. Could you please let me know? I'm trying to find out before placing the order. Thanks, Ed 1 answer
    Hey all, just to be sure but this system will work with a magna flow cat back exhaust. If it does work does anyone know if I will have any issues with the emissions requirements in Ontario Canada? Thanks 1 answer
    Will this fit on a 2006 3valve Saleen s281 stock exhaust and if the recommended tune is paired with the product whats the hp gains we're looking at. Thanks for the help. 1 answer
    What kind of tune would you recommend or I could tell the garage I need when they install it? 1 answer
    Will this combo kit make use of all 4 O2 sensors? Up and downstream? 1 answer
    Hello. Do these hang any lower than the factory headers and mid pipe? I have my car lowered 1.5 and don't want to worry about bottoming out. 1 answer
    I know you guys said no retune is required but still is recommended. So will the check engine light turn on because of this or will it just not run up to its max potential? 1 answer
    Will the mid pipe bolt up to a 3 inch magnaflow catback with no issues? 1 answer
    If I install these will my car still pass deq 3 answers
    Will these connect to stock cat back? I have to purchase my upgrades in stages. So If I purchased these I would have a while before I could get the cat back exhaust. Can these connect to the stock cat back exhaust? 1 answer

    People Who Bought This Item Also Bought

    Customer Reviews (23) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Weekend

    Installation Cost:$250-$500

    • Loudness / Volume 4.590909 4.6
    • Exhaust Note 4.818182 4.8
    • Fit & Finish 4.681818 4.7
    • Bang For Your Buck 4.636364 4.6



    • 5/5

      Installation Time: Weekend

      September 05, 2018

      Hooks long Tube Headers

      Easy install! Sounds good! Very good product to buy!

      Michael

      Year: 2005 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Full Day

      May 21, 2018

      Looks exhaust

      Sounds great and received exceptional power gains.

      JohnH

      Year: 2006 Submodel: GT

      Helpful (3)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      April 18, 2018

      Now sounds like a beast

      I read enough to not try the install myself since I don't have a lift. So I had a shop install them. I was really surprised at how much louder my car was vs. stock. I have put headers on a few cars I've owned and these made the biggest difference in sound by far. I really wasn't going for the loud, but it's not too bad as long as you aren't into the throttle too much. I had put on a supercharger a year or so ago and wanted the headers so things could breath better. I did run into an issue that isn't completely resolved yet. The clearance on the driver side cat is very minimal. When I first picked up the car after the install, the cat was hitting on the driver side both on the floorboard and the O2 sensor was hitting the transmission mount. After some wrestling and minor grinding by the shop, the driver side cat clears the floorboard (barely) and the O2 sensor no longer hits. But after the exhaust heats up after 20 minutes or more of driving, the driver side cat hits the floorboard occasionally when accelerating causing a bunch of noise. I may need to take it to an exhaust shop to tweak a bend to give me some clearance? Overall, I'm very happy with them. Although I need to get the clearance issue resolved.

      jslacy

      Year: 2008 Submodel: GT

      Helpful (5)

    • 4/5

      Installation Time: Weekend

      April 09, 2018

      Long tubes

      Great ad on for my Roush mustang, installation was completed with 4 tall jack stands I did not have to remove the motor mounts or k member. I did throw out the supplied mounting bolts for a good set of headlock locking header bolts. Also a good selection of hand tools will make install a lot easier..

      BentRod

      Year: 2008 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Weekend

      September 10, 2017

      Sounds like a beast

      I got this combo with the Pypes muffler delete and it sounds loud and raspy just like i wanted.

      JoeR007

      Year: 2007 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      September 02, 2017

      MUST BUY!!!!

      I had these to go with my Flow Master Outlaw Axle backs and I must tell you it is amazing! I cant get over the feel and sound! It is expensive, but extremely worth it!

      Mickie

      Year: 2005 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Full Day

      June 21, 2017

      high class long tube headers

      fits perfect, but need some little 4- 5 final ajustement. sound was really perfect with my bullitt stock muffler.

      HugoB

      Year: 2008 Submodel: Bullitt

      Helpful (3)

    • 5/5

      Installation Time: Full Day

      June 14, 2017

      Great product

      After many hours of research on multiple headers and mid-pipes, I finally decided to go with Kooks. I was a little weary of buying the Kooks as they are the most expensive out of any others, however, the quality of the material, as well as the quality of the sound, simply cannot be beaten. Getting these headers to fit onto the engine was a bit of a pain. The lower header bolts become very hard to get to when the new headers are put on. If you find yourself purchasing this great product, I would HIGHLY recommend removing the K-member as it will allow you to get your hands directly underneath the headers instead of having to go from the side like I did. It took my father and I around 9 hours from start to finish while using a lift. Nontheless, these headers are amazing and give you an amazing sound that is sure to turn heads going down the road.

      DrakeP

      Year: 2009 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Full Day

      March 17, 2017

      Can't go wrong with kooks

      Purchased these for my 08 GT and the sound is phenomenal. Such a night and day difference between stock manifold. My mechanic said they were the best fitment and quality headers he has installed ever. The x-pipe does give a very raspy tone so if you don't like that type of tone I would say get the headers and go for the kooks h-pipe instead. Overall great product and I am very satisfied.

      mitchjb98

      Year: 2008 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      January 22, 2017

      Amazing Quality

      I like many others have done hours upon hours of research for the best headers for my pony. Everyone is gonna have their own opinion and mine now more than ever is Kooks. The quality of the welds and stainless steel tubing are superior to some other brands that I have seen. The moment I started my pony up you could just hear her singing with joy. The x-pipes have a bit of raspy tone to it and the overall noise isn't too loud making it just enough to wake your neighbors at 5am but not enough to put you on any police radars. These are a little on the pricey side but you get what you pay for.

      Ziggy

      Year: 2007 Submodel: GT

      Helpful (6)

    • 5/5

      May 20, 2016

      05 Saleen NOVI 2200

      Had local shop install these and netted additional 52 RWHP and 36 ft lb Torque. This was also with the addition of Steeda Charge motion delete plates. 502 RWHP and 457 torque. Clutch slipped at 6K RPM so need a upgrade. Made a HUGE difference and could not be happier. 373s were also added.

      Ammotroop

      Year: 2005 Submodel: Other

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      July 11, 2015

      More power, great fit, great sound

      I bought this after intake, cam, gears (and other stuff). Fit is great, power increase is wonderful, and the sound is fantastic. Without changing the exhaust your power isn't maximized.

      Wally1681

      Year: 2006 Submodel: GT Minneapolis, MN

      Helpful (3)

    • 5/5

      Installation Time: Weekend

      August 14, 2014

      Bigfoot

      This header kit is absolutely the best item I have installed yet on my 2007 Shelby GT to date. The install took me a weekend to complete, but only because I don't have a lift. I bought the Flowmaster Outlaw mufflers a couple years and that sounded great without the headers. Now that I have installed the Kooks headers with X-Pipe kit, and combined with the Flowmaster Outlaw Mufflers the sound is OMG out of this world. Anyone looking to put a set of on their Mustang, I strongly suggest the Kooks header with X-Pipe kit. The sound that is put out, seems nothing short of a straight pipe exhaust system. This item gets a 10+ from me. Thanks American Muscle.

      Bigfoot4000

      Year: 2007 Submodel: GT Southern California

      Helpful (5)

    • 5/5

      Installation Time: Full Day

      November 13, 2013

      Awesome Power / Great Sound

      I love this package. I replaced my shorties with these Kook LTs and I couldnt be happier. Not only is the exhaust note very powerful but the power increase when combined with my CAI, FR TB, FR Intake Manifold, and Bama Tune put me at a dyno-ed 330 HP to the wheels. Good job Kooks.

      JaredMoon

      Year: 2007 Submodel: GT USA

      Helpful (5)

    • 5/5

      Installation Time: Full Day

      July 05, 2013

      The quality of the kooks headers are awesome!

      Yes, the Kooks headers are a bit 'pricey' but you can't beat the quality. Expect to take your time and have patience during the install.

      TomL1

      Year: 2005 Submodel: GT New York

      Helpful (4)

    • 5/5

      Installation Time: Full Day

      May 03, 2013

      Worth the Money and Time

      Install: The installation was tough on jack stands, but having never touched an exhaust system before, it was pretty straight forward. It might seem intimidating, but it's just time consuming. The only complaint I have about fitment is that it seemed impossible to get a torque wrench on every header bolt. However, I haven't had a problem with leaking and I've had them on for almost a year now. Just make sure you get them tight, and turn them again after the first drive while they're still warm. Sound: I initially had flowmaster mufflers with these (not sure what model, they were put on by the previous owner). I lived in an apartment complex, and even with Hot Rod cams, the flowmasters kept it quiet. I have since switched to the FR500s axle back and it is much louder, pops on deceleration, and pretty much sounds like an animal. If you are worried about volume, don't be. Even with the FR500s, I can still creep around under 2000 rpm and keep her quiet in the neighborhood. It's the cold starts that really make noise :D Performance: With this exhaust system, the Airaid Race intake and a Bama tune (no Hot Rod cams), I shaved off .95 seconds on my best stock ET with back to back trips to the track. Enough said.

      Josh1

      Year: 2006 Submodel: GT Houston, TX

      Helpful (5)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      June 02, 2012

      The product incresed overall performance

      Excellent product, a bit hard to install due to the lack of space LOL. perfect fit, looks great and sounds wicked. american Muscle quick delivery and support is the best!!!!!

      Miltons

      Year: 2010 Submodel: GT Germany

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      March 24, 2012

      Kooks Headers

      If your looking for long tube headers this is the way to go. They sound amazing the power gains in the mid to high rpm are amazing. I have this with the fr500 muffler and I love the mix of the too. In my opinion these are a must have if you want a awesome sounding exhaust.

      Razo

      Year: 2008 Submodel: GT

      Helpful (6)

    • 5/5

      Installation Time: Shop Install

      March 23, 2012

      Great Buy!

      These headers are top notch in fit and finish! Took the shop a full day to install and tune the car. It was well worth the wait! The exhaust note coming from the magnaflows deserves to be on a ring tone! Noticeable power gains throughout RPM's. Had the car dynoed after and with some bolt ons and ford racing throttle body I put down 320 RWHP and 330 RWTQ in my 2010 stang! Forced my buddy with a Camaro to go out and put cams and headers on his so he wouldn't get outran! Lol! As usual fast shipping and great customer service from A.M! !! Don't hesitate on buying these because you won't be disappointed!!

      Stallion10

      Year: 2010 Submodel: GT Atlanta, Ga

      Helpful (4)

    • 5/5

      Installation Time: Full Day

      March 02, 2012

      Kooks Header and Catted X-pipe Combo - Manual (05-10 GT)

      The superior fit and finish of the Kooks Headers and the catted X-pipe is AWESOME! It woke up the car!

      LMitchell

      Year: 2006 Submodel: GT Sumter SC

      Helpful (4)

    Related Mustang Categories