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Kooks Super Street Shorty Headers 1-7/8 in. (11-14 GT, BOSS)

3 Reviews
Our Price

$625.99

  • Item #65535
  • MPN# 11401400

  • Market Price $699.99
  • You Save 11% ($74.00)
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Customer Photos
Features
  • 10-12 Horsepower increase along with increased Torque
  • 50% lighter than the factory manifold
  • Shorty header design
  • Free flowing 1-7/8" mandrel-bent tubing
  • 304 stainless steel construction
  • Tig welded for strength
  • Fits 2011-2014 GT and BOSS Mustangs
Description
More Horsepower and Torque. Replace those heavy, restrictive cast iron stock factory exhaust manifolds with a set of Kooks Super Street Shorty Headers. This upgrade will increase the horsepower of your 5.0L Coyote Powered Mustang by approximately 10-12 horsepower. Additionally, these Kooks headers are approximately 50% lighter than stock.

Quality Construction. Kooks Super Street Shorty headers are manufactured from 1-7/8" mandrel bent 304 stainless steel tubing with 3" collectors for superior exhaust flow and optimal performance. These Kook shorty headers feature a one piece 3/8" header flanges that are TIG welded for extra strength and a direct OEM style fit.

Application. These Kooks Super Street Shorty Headers are designed to bolt straight up in the stock location to the stock factory Mid-Pipe without any modifications required on the 2011 to 2014 5.0L GT and BOSS Mustangs for improved exhaust flow and sound.

Mustang Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (1) Driver side header
  • (1) Passenger side header
Installation Info
Tech Specs
Header Specifications
Header Type: Shorty Finish : Natural
Type Mid Pipe Required: Standard Length Fitment: 2011-2014 5.0 GT & BOSS Mustangs
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • GT - 11, 12, 13, 14

Most Helpful Reviews Read All Reviews

Overall Rating 5/5 Write a Review
5/5
Tight Fit

I got these headers and knew going into it that it would be tough, did not realize how tough it would be though. It was a serious task to get to the top bolt on the starter, and they are really tight for

Read More
Helpful (5) (2)

5/5
Kooks super shorty street headers

Awesome awesome product. Took a weekend to install but could be done faster as I took my time. You well feel the power increase, and the fitment is just perfect. One note thought be carefull of the ac

Read More
Helpful (1) (0)

Customer Photos (1) View All Customer Photos

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Q & A (1 Questions, 1 Answers) Ask a Question

do i need a new tune ?

gilbert Year: 2011 Model: GT

Good Question (0) (0)
  • You dont need a tune, but for proper performance results a custom tune help to increase your HP & TQ

    Helpful (0) (0)

    02AlexGT Year: 2002 Model: GT

Answer This Question

Reviews (3) Write a Review

  • 5 Stars 1.0 100%
  • 4 Stars 0 0%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
5.0

out of 5 stars

3 Customers Recommend this Product

Installation Time:Weekend

  • Performance Gain: 4.666667 4.7/5
  • Fit: 5 5/5
  • Bang For Your Buck: 5 5/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    June 19, 2013

    Tight Fit

    I got these headers and knew going into it that it would be tough, did not realize how tough it would be though. It was a serious task to get to the top bolt on the starter, and they are really tight for being such a small bolt, then getting the front two bolts on the passenger side engine mount became a chore to remove because of the ground wire on the upper one and the one wiring harness. After getting that all out of the way and removing the steering linkage I just had to lift the engine up. Removing the headers was fairly easy, and removing the studs was fine as long as you have an E8 inverted torx socket. The instructions I got with my headers said to put a few of the bottom bolts in and hang the header on it, that didn't work for me at all. I put the top 4 in, pressed the header up into it then started the easiest to reach bottom bolt. Also I had to clean the holes up before putting the new bolts in, mine was the fine thread set and it was a M10X1,25 tap. I would highly recommend using a lift if you have access to one, this job really sucked to do laying under the car between a jack and jack stands.

    TurboWolf88

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

    Helpful (5) (2)

  • 5/5 Yes, I recommend this product

    March 09, 2014

    Wow!

    I installed these in my garage with rear wheels on ramps and the front on jack stands. I won't lie, this job was hard! It took about 3 days but it was really worth it. I definitely recommend dropping the K-member as it will make the starter and all the header bolts easy to access except the front passenger side stud. Like another customer mentioned get an e8 torx socket and removing the studs will be easy. My 2013 GT with 22000 miles has been thru 2 winters here in Germany so my exhaust is pretty rusted. I snapped one of the catalytic converter studs so be prepared to knock the studs out and replace them if this happens to you. I also recommend replacing your stock motor mounts if you are going to do this job since you will either have the k-member out or engine raised either way. After the first start up I knew I made a great choice. I thought my Roush axlebacks sounded great before, but now they are a little louder and much deeper! I can definitely feel the seat of the pants hp/tq gain from these headers!

    Top 1000 Contributor

    13GTBREMBO

    Year: 2013 Model: GT Driving Style: Daily Driver

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    August 25, 2013

    Kooks super shorty street headers

    Awesome awesome product. Took a weekend to install but could be done faster as I took my time. You well feel the power increase, and the fitment is just perfect. One note thought be carefull of the ac hose on the passenger side as its close to the factory header stud

    adamsmustang

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 canada

    Helpful (1) (0)

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