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SLP Ceramic Long Tube Headers and Catted Shorty X-pipe (11-14 GT)

3 Reviews
Our Price

$1,709.99

  • Item #23044
  • MPN# M30007

  • Market Price $1,915.99
  • You Save 11% ($206.00)
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Customer Photos
Features
  • Increase of up to 28 RWHP and 27 RWTQ
  • Includes long tube headers with matching catted X-pipe
  • Stainless steel construction
  • Aluminum ceramic coating
  • High flow catalytic converters included
  • Made in the USA
  • Fits 2011-2014 GT Mustangs
Description
Dyno-proven Rear Wheel Gains. Get the most power out of your 5.0 Coyote with a SLP Long Tube Header and catted X-pipe combo kit. These SLP ceramic coated headers replace your restrictive stock factory manifolds to improve exhaust flow and increase your Pony's horsepower and torque. Increases of up to 28 RWHP and 27 RWTQ have been seen when installed with the included SLP shorty X-pipe.

Aluminum Ceramic Coating. SLP uses a durable Aluminum Ceramic Coating (inside and out) on its long tube headers to reduce under hood temperatures, increase horsepower, lengthen the headers life, and for it's outstanding good looks. Ceramic Coated headers will long out last both polished and chrome plated headers.

Made In The USA. Hand-crafted right here in the U.S.A from 1-3/4" CNC mandrel bent stainless steel tubing, these SLP Long Tube Mustang Exhaust headers have a 4-into-1 design that merge into 3" collectors. The collectors feature an integrated venturi-style spike to optimize exhaust flow, resulting in a monster increase of horsepower.

High Flow Cats. The included SLP mid-pipe uses CNC mandrel-bent 3" stainless steel tubing with a genuine X style crossover for a raspy race car sound and features a pair of 3" 200 cell per inch high-flow catalytic converters to provide a significant horsepower increase over the restrictive stock factory catted pipes.

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

Application. This SLP long tube header and matching catted X-pipe combo kit is specifically designed for the 2011 to 2014 GT Mustangs equipped with the 4-valve 5.0L coyote engine. Compatible with factory or SLP Axle-Back Exhaust Systems. Technical notes. Not legal for use on pollution controlled motor vehicles; intended for off road use only.

Fitment: 2011 2012 2013 2014 Details

Won't fit? Add an exception

What's in the Box
  • (2) Headers
  • (2) catalytic converters
  • (1) X-pipe
  • (2) Over axle pipes
  • (14) Clamps
  • (22) Bolts
  • (4) o2 extenders
Installation Info
Tech Specs
Header Specifications
Header Type: Long Tube Finish: Polished Ceramic Coating
Type Mid Pipe Required: SLP Shorty X Fitment: 2011-2014 GT


Mid Pipe Specifications
Style Mid Pipe: Shorty "X" Type Headers Required: SLP Long Tube
Piping Material: Stainless Steel Piping Size: 3"
Catalytic Converter: "Yes" Fitment: 2011-2014 GT
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • GT - 11, 12, 13, 14

Most Helpful Reviews

3/5
Needs some work, but still awesome!

For a full read review search the AFM forums. Be warned, the kit did not simply "bolt on" out of the box, but this is somewhat expected for a such a big install. We did need to get shorter manifold bolts ...

Read More
Helpful (6)

3/5
Not really worth it

First off, I love the sound! It sounds great, and I can feel a little difference in power. Overall though the product was not what I was expecting... For what your paying for everything you get should ...

Read More
Helpful (3)

Read All 3 Reviews
Overall Rating 3.7 out of 5 stars

Customer Photos (3) View All Photos

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Q & A

Ask a Question

2013 BOSS 302 Laguna Seca Is this system compatible with a 2013 BOSS 302 L. Seca? And is it compatible with the Flowmaster Outlaw Series Axle Back Kit?

CarreraCaballo Year: 2013 Model: Boss

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

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Customer Reviews (3) Write a Review

Overall Rating 3.7

out of 5 stars

Installation Time:Weekend

  • Loudness / Volume 4.666667 4.7
  • Exhaust Note 4.666667 4.7
  • Fit & Finish 2.666667 2.7
  • Bang For Your Buck 3.666667 3.7



  • 3/5

    Installation Time: Weekend

    March 09, 2012

    Needs some work, but still awesome!

    For a full read review search the AFM forums. Be warned, the kit did not simply "bolt on" out of the box, but this is somewhat expected for a such a big install. We did need to get shorter manifold bolts for the headers to install, the stock bolts would not clear (Even though the instructions say to use the stock bolts). The O2 extensions left an open circuit fault and I ended up splicing them into the original harnesses (The extension connectors would not mate completely and thus the O2 heater would not work). And the entire exhaust has some serious clearance issues as it goes down the line. This is expected though from any exhaust 3" or bigger though. To stop all the banging around, we had to use a pry bar and re-bend some pipe a little. It still clangs off the rear axle on rough bumps from time to time, but that is because my car is lowered 2". If you are not lowered, you won't have this problem. I have had the kit installed for about a week now and just kept the stock axlebacks. The car does sound louder, deeper and meaner now. It pops on deceleration too. Was definitely worth the experience, but only if you are willing to jump through some hoops a bit.

    Trick

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

    Helpful (6) (0)

  • 3/5

    Installation Time: Weekend

    December 29, 2012

    Not really worth it

    First off, I love the sound! It sounds great, and I can feel a little difference in power. Overall though the product was not what I was expecting... For what your paying for everything you get should work and fit properly. The bolts didn't work. My dad and I ended up cutting them so they would work. The o2 extensions for the sensors also didn't work at all. From the headers back we ran into a bunch of problems with it all not fitting up properly. If I were to get this again (which I most likely wouldn't) I would have someone install it for me and I would look into some decent extensions and bolts.

    DJ123

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

    Helpful (3) (0)

  • 5/5

    Installation Time: Weekend

    March 21, 2012

    Great Product, very loud!

    Great product, all pipes fit perfect. Had some issues with the supplied header bolts, i would go down to a local hardware store and get more because they only give you 11 bolts and i personally would like all 16 to match. Everything looks good under the car and it is very loud, huge performance gains over stock. Mine is mounted up to the Loud Mouth axle-backs. Sounds like a race car. Instructions are good but lack pictures in my opinion. Be careful when taking off and replacing your steering shaft, as i ran into some issues. I would definitely buy again but probably would pay someone to install them for me!

    SDK06

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

    Helpful (2) (2)

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