1999-04 Mustang American Racing Headers

American Racing Headers system for the GT and Cobra Mustangs, Model years 1999-2004

This American Racing Headers' long-tube system is crafted with the same great attention to detail and quality that all ARH systems are. Crafted for both the 2-Valve and 4-Valve Mustangs, this gives owners of those vehicles something to rejoice over. If you want improvements in the sound, performance, look, finish, and durability of your car, this upgrade can provide all of those! Laden with exceptional features, there's no better bang for your performance buck out there.

• Manufactured entirely using the highest quality 304 Stainless Steel
• 100% leak free single piece long tube design
• Merge collectors with scavenger spikes for superior flow
• 3/8" thick flanges with hand ported inlets, all of which is tig welded for the highest strength and quality
• Excellent fit and easily installed from underneath the vehicle
• Wide positioning in the engine compartment for easy Trans access still
• Oustanding gains in both Horsepower and Torque across the entire RPM range
• Choices of 3/4" and 7/8" primaries with 2 1/2" and 3" collector options
• Choice of direct bolt-in catted system as well off-road cat-less X-pipe options
• Ultra high flow 200 cell metallic substrate cats

It doesn't get any better than this for your performance Mustang!

**Please note when selecting your system that those with the systems with 3" X-Pipes are for High Boost Apps only** 

Please select your vehicle and application specific system from the Drop-Down Menu below.