2024–26 Mustang Dark Horse 5.0L ARH Long System Headers

Features & Benefits

• ARH long system with a 3-inch X-pipe and a choice of 1-3/4-inch, 1-7/8-inch or 2-inch primary tubes.
• Made in the USA from 304 stainless steel, with 3/8-inch laser-cut flanges, hand-ported TIG-welded inlets, optimized primary routing and merge collectors with scavenger spikes.
• ARH states performance gains of up to 30 rear-wheel horsepower. Installation mates to the existing axle-back with a mark-and-cut connection; no welding required.
• Catted variants use severe-duty 300-cell catalytic converters. Ask before ordering about ARH's optional G-Sport upgrade.

Fitment

2024–26 Ford Mustang Dark Horse 5.0L V8. Select the primary diameter and catalytic converter configuration for the exact ARH SKU.

Fitment Notes

ARH states this system is manufactured exclusively for racing purposes. Installation eliminates legal use of the vehicle on public roads and highways. Built to order; contact us for current lead time.