aFe LARGE Bore HD Exhausts Cat-Back SS-409 EXH CB Ford Diesel Trucks 03-07 V8-6.0L (td)

The aFe Large Bore-HD 4-inch 409 stainless steel cat-back exhaust system is designed to enhance the performance of Ford F-250 and F-350 trucks from 2003 to 2007. Constructed from mandrel-bent 409 stainless steel tubing, this system features a large 4-inch main diameter and a single side exit configuration. It delivers an aggressive and loud exhaust note while increasing exhaust flow, which results in more horsepower and torque. The system also helps lower exhaust gas temperatures, contributing to improved engine efficiency and durability. Each exhaust is dyno-tested by aFe to ensure maximum performance gains, making it a reliable upgrade for serious enthusiasts seeking increased power and a commanding sound.

This exhaust system is a direct bolt-on replacement for the factory setup on applicable Ford Super Duty models within the 2003-2007 range. It is suitable for use on trucks intended for performance driving, whether on the street or track, and is ideal for those looking to improve exhaust flow and engine output. The kit includes all necessary components for installation, with mandrel-bent tubing ensuring smooth exhaust flow and durability. Designed specifically for models with a 4-inch exhaust diameter, this system provides a straightforward upgrade for owners seeking increased performance and a more aggressive exhaust tone.