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Stainless Works 1-7/8 in. Long Tube Headers & Off-Road X-Pipe Kit (11-14 GT500)

Market Price $1,858.99 You Save 12% ($215.49)
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  • Item 101816
  • MPN# GT115HOR

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    Features & Details

    • Increases Horsepower and Torque
    • Raspy Race Car Growl
    • Long Tube Header Design
    • Free Flowing 1-7/8" Mandrel-Bent Tubing
    • Stainless Steel Construction - Natural Finish
    • Matching Off-Road Shorty X-Pipe Included
    • Intended for Off-Road, Track Use Only
    • Designed and Manufactured in the USA
    • Fits 2011-2014 Shelby GT500 Mustangs
    More Horsepower And Torque. Improve the performance of your high powered Shelby GT500 throughout the entire RPM range with a Stainless Works Long Tube Header and Off-Road Shorty X-Pipe combo kit from AmericanMuscle. This Stainless Works Header and X-Pipe kit will greatly improve your Shelby's exhaust flow over the restrictive stock manifolds and Mid Pipe to significantly increase your Pony's horsepower and torque.

    Superior Construction. Manufactured in the USA from 1-7/8" mandrel bent 304 stainless steel tubing for superior airflow, Stainless Works Long Tube Exhaust Headers are TIG welded and feature a one piece 3/8" thick header flange for added strength and optimal leak-free performance.

    Race Car Growl. The included Stainless Works 3" diameter 304 stainless steel off-road X-Pipe not only improves exhaust flow to increase power, but it also adds a crisp raspy, race car growl to the sound of your Mustangs exhaust with its modern merged "X" crossover design.

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

    Application. This Stainless Works Long Tube Header and Off-Road X-Pipe combo kit is specifically designed to fit the 2011 to 2014 Shelby GT500 Mustangs equipped with the supercharged DOHC 32-valve V8 engine.

    Technical notes. This Stainless Works product may not be legal for use on pollution controlled motor vehicles; intended for off road use only.

    Fitment: 2011 2012 2013 2014 Details

    What's in the Box
    • Long Tube Headers
    • Off-road X-Pipe
    Installation Info
    Tech Specs
    Header Specifications
    Header Type: Long Tube Finish: Natural
    Type Mid Pipe Required: Shorty - Included Fitment: 2011-2014 Shelby GT500 Mustangs

    Mid Pipe Specifications
    Style Mid Pipe: Shorty "X" Type Headers Required: Long Tube - Included
    Piping Material: Stainless Steel Piping Size: 3"
    Catalytic Converter: "No" - For off-road use only Fitment: 2011-2014 Shelby GT500 Mustangs
    Will it fit my Mustang?

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    Customer Reviews (1) Write a Review

    Overall Rating 5.0

    out of 5 stars

    Installation Time:Full Day

    • Loudness / Volume 5 5
    • Exhaust Note 5 5
    • Fit & Finish 5 5
    • Bang For Your Buck 5 5

    • 5/5

      Installation Time: Full Day

      August 11, 2015

      2011 GT500 long tubes

      Fit and workmanship was great. Only complaint would be the bolts. For the price of these headers should come with ARP fasteners. Have not started motor as of yet so don't know the loudness of them.


      Year: 2011 Submodel: GT500 Shafted California

      Helpful (4)

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