Guaranteed Free Delivery by 12/24! available on most items - Details

Talk to a Mustang Expert
1-877-887-1105
Every day 8:30AM EST - 11:00PM EST
Win $3,000 In Mods!! Enter Daily!

American Racing Headers 1-7/8 in. Long Tube Catted Headers w/ X-Pipe - Long System (15-19 GT)

Market Price $2,438.99 You Save 13% ($317.99)
Our Price

$2,121.00 (kit)

FREE Shipping

  • Item 389160
  • MPN# MTC5-15178300LSWC

Will this fit your Vehicle?

In Stock Ships same business day.
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 & Details

    • American Racing Headers Long System
    • Increases Rear Wheel Horsepower and Torque
    • Long Tube Header Design - 1-7/8"
    • High-Flow Catalytic Converters
    • X-Pipe Included - Eliminates Factory Resonator
    • 3" Mandrel-Bent Tubing (Steps Down to 2.5")
    • 304 Stainless Steel Construction
    • Intended for Off-Road, Track Use Only
    • Made in the USA
    • Fits Left Hand Drive Models Only
    • Fits 2015-2019 GT Mustangs with Factory or 2-1/4" Aftermarket Axle-Back
    More Horsepower And Torque. See a significant increase in the power and performance of your 5.0L coyote S550 Mustang with an American Racing Headers Catted 1-7/8" Long Tube Header and X-Pipe Long System. These American Racing Headers and X-Pipe will greatly improve your GT Mustangs exhaust flow, over the restrictive stock manifolds and resonator Mid Pipe, for a considerable increase in rear wheel horsepower and torque.

    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 1-7/8" 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" Long Systems to "step down" at the rear axle, which allows you to reuse your stock mufflers or the 2-1/4" aftermarket axle-back of your choice. Installation will require cutting and reusing the stock muffler assemblies and clamping them in place. Clamps and detailed instructions are provided.

    Application. This American Racing Headers 1-7/8 x 3 in. Catted Long Tube Header with X-Pipe Long System is designed to fit both Fastback and Convertible 2015-2019 GT Mustangs equipped with the coyote 5.0L DOHC V8 engine. Requires the use of the factory or a 2-1/4" aftermarket axle-back 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 Details

    CA Residents: Warning: California's Proposition 65

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

    You Might Also Like

    Customer Photos (1) Submit Your Photo

    View 1 Photo

    Q & A

    No questions about this product yet.

    Ask the First Question

    Customer Reviews (2) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Shop Install

    Installation Cost:$500-$1000

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



    • 5/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      October 25, 2018

      Loud

      Makes my car sound like a monster!!! It has noticeably more top end. Whp and torque went up!! Quality of the headers are a 10 in my book. I’m happy with my purchase. If I was to trade for a newer 5.0 I would repurchase the same ARH!!!!

      AndreB

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      July 27, 2016

      A lot of powerrrrrrr!

      Wow. This upgrade is definitely worth it. It makes you GT complete package. It adds good amount of power that is not noticed in the stock. Thanks american muscle.

      Sunny

      Year: 2016 Submodel: GT

      Helpful (4)

    Related Mustang Categories