Aggressive Muscle Car Rumble. This free flowing MAC off-road mid-pipe not only increases the horsepower and torque of your Mustang, but with its unique Pro Chamber cross over design it adds a more aggressive muscle car rumble to the sound of your exhaust, that the standard H-pipe just can't match.
High Quality Construction. Mandrel bent from durable 2.5" steel tubing so there are no kinks to rob you of power, this MAC Performance mid-pipe has been hot-dip coated with aluminum-silicon alloy to aluminize the steel to protect against corrosion and rust.
Application. This MAC Performance Pro Chamber Off-road Mid-pipe is designed as a direct bolt-on for the 1999-2004 4.6L Mustangs, including the GT, Bullitt, Mach 1 and SVT Cobra Models with either aftermarket short tube headers or the stock factory manifolds and a dual catback exhaust installed. Intended for off-road, track use only, does not include catalytic converters.
Technical note: 2004 Mustangs require the use of 24" O2 sensor plug-in extender wires. This MAC Performance product is intended for off road use, and is not legal for use in emission restrictive states.