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American Racing Headers 1-3/4 in. Long Tube Catted Headers w/ X-Pipe - Bottle-Neck Eliminator (15-20 GT)

Item 389168
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Market Price $2,034.99 You Save 13% ($265.74)
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$1,769.25 (kit)

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    Features & Details

    • American Racing Headers Bottle-Neck Eliminator System
    • Increases rear wheel horsepower and torque
    • Long Tube header design - 1-3/4"
    • High-flow catalytic converters
    • X-pipe included - eliminates factory resonator
    • 3" Mandrel-bent tubing
    • 304 stainless steel construction
    • Intended for off-road, track use only
    • Made in the USA
    • Fits Left Hand Drive Models Only
    • Fits 2015-2020 GT Mustangs with a 3" aftermarket catback
    More Horsepower And Torque. Improve the exhaust flow of your coyote powered S550 Mustang with an American Racing Headers Catted 1-3/4" Long Tube Header and X-Pipe Bottle-Neck Eliminator System for a significant increase in rear wheel horsepower, torque and overall engine performance, when compared to the restrictive factory manifolds and resonator Mid Pipe.

    Race Car Growl. The included X-Pipe not only eliminates the factory resonator to help increase power, but it also adds a loud raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

    Quality Construction. American Racing Headers are manufactured in the USA from mandrel-bent 1-3/4" diameter 304 stainless steel tubing that merges into 3" collectors with scavenger spikes for superior exhaust flow. These long tube headers feature a one piece 3/8" header flange for additional strength, leak-free performance and an OEM style fit.

    Required Upgrade. To realize the full power potential that these Long Tube Headers have to offer, AmericanMuscle highly recommends a custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

    Cut & Clamp Installation. American Racing Headers designed their 3" Bottle-Neck Eliminator System to work in conjunction with most aftermarket 3" catbacks to eliminate the 3" to 2.5" step down restriction created by other 3 inch exhaust systems. Installation will require cutting and clamping the aftermarket 3" catback to fit into the included Mid Pipe. Clamps and detailed instructions are provided.

    Application. This American Racing Headers 1-3/4 x 3 in. Catted Long Tube Header with X-Pipe Bottle-Neck Eliminator System is designed to fit both Fastback and Convertible 2015-2020 GT Mustangs equipped with the coyote 5.0L DOHC V8 engine. Requires the use a 3" aftermarket catback exhaust for proper installation.

    Technical Note. Long tube headers are not legal for use on pollution controlled motor vehicles; they are intended for off road use only.These Headers are intended for left hand drive applications only.

    Fitment: 2015 2016 2017 2018 2019 2020 Details

    MPN# MTC5-15134300BEXWC

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Driver side header
    • (1) Passenger side header
    • (2) Catted connection pipes
    • (1) X-pipe
    • (2) Header gaskets
    • (4) Oxygen sensor extension
    • (6) Clamps
    • (1) Bracket
    • (16) Bolts
    Installation Info
    Tech Specs
    Header Specifications
    Header Type:Long TubeType Mid Pipe Required:Included
    Material:304 Stainless SteelFinish:Natural
    Catalytic Converter:"Yes" - For off-road use onlyFitment:2015-2017 GT Mustangs
    Will it fit my Mustang?

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          Customer Reviews (2) Write a Review

          Overall Rating 4

          out of 5 stars

          Installation Time:Weekend

          • Loudness / Volume 3.5 3.5
          • Exhaust Note 5 5
          • Fit & Finish 4.5 4.5
          • Bang For Your Buck 4 4

          • 4/5

            Installation Time: Weekend

            June 07, 2017

            ARH bottle neck ARH cat back

            the product it self is great, but if you want a full ARH exhaust system, their cat back (which you basically have 1 mid pipe from this system and 1 mid pipe from the ARH cat back system that meets which are both 3 inchs) does not attach unless you buy a double side 3" ID tube from advance auto, you can buy the long system which fits the cat back perfectly but the 2.5 down size happens at the mid pipe for the long system and the 2.5 down size happens at the axle back if you buy this and the ARH cat back with a minor extra mod. so if you want a full 3" exhaust system get this but you have to buy a different brand for the axle back. I tried my best too explain this.


            Year: 2017 Submodel: GT

            Helpful (9)

          • 4/5

            Installation Time: Weekend

            May 12, 2016

            Great sound

            Best overall bang for your buck, gives great sound and great power


            Year: 2006 Submodel: GT

            Helpful (9)

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