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 1-3/4 in. Long Tube Off-Road Headers w/ X-Pipe - Long System (15-19 GT)

Market Price $2,232.99 You Save 13% ($291.54)
Our Price

$1,941.45 (kit)

FREE Shipping

  • Item 389167
  • MPN# MTC5-15134300LSNC

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 - 1-3/4"
    • 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 GT Mustang with an American Racing Headers Off-road 1-3/4" Long Tube Header and X-Pipe Long System. This American Racing Headers and X-Pipe combo kit will considerably improve the exhaust flow of your coyote powered S550 Mustang, when compared to the restrictive stock manifolds and resonator Mid Pipe, for a measured 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 1-3/4" 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" 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 1-3/4 x 3 in. Off-Road 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) Off-road 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: "No" - For off-road use only Fitment: 2015-2017 GT Mustangs
    Will it fit my Mustang?

    You Might Also Like

    Customer Photos

    Q & A

    No questions about this product yet.

    Ask the First Question

    Reviews

    Related Mustang Categories