4 inch Cat Back Exhaust System Single Side Exit T409 Stainless

Features:

• 4-inch mandrel-bent stainless steel tubing
• T409 stainless steel resists rust and corrosion
• Cat back design retains factory catalytic converter
• Single side exit for a clean, OEM look
• Aggressive sound tuned for diesel performance
• Improves horsepower and torque output
• Helps lower exhaust gas temperatures
• Boosts throttle response and fuel efficiency
• Bolt-on installation with factory-style hangers
• Includes all required clamps and hardware
• Designed specifically for 6.0L Powerstroke engines
• Ideal for towing and daily performance driving

Get More Muscle And Tone Without Going Full Race

If you’ve been wanting to bring your 6.0L Powerstroke to life without ditching your emissions gear, the MBRP S6208409 Cat Back Exhaust System is the upgrade your truck deserves. It gives you that deep, aggressive sound that lets people know you mean business without turning your rig into a straight-pipe monster. The tone is bold but still perfectly streetable, making it ideal for daily drivers and tow rigs alike. With better airflow comes cooler engine temps, stronger throttle response, and a noticeable bump in both torque and fuel efficiency. It’s the kind of upgrade you feel when you're pulling a trailer or just cruising up a long incline. This system also keeps your factory catalytic converter in place, so you stay compliant in most states while still gaining performance. It’s built for drivers who want a serious boost without losing driveability or spending a fortune on custom work.

Designed For Long Hauls And Lasting Performance

The MBRP S6208409 features a high-flow cat back layout built from T409 stainless steel, giving you solid durability and resistance to rust in most driving conditions. This system uses 4-inch mandrel-bent tubing that improves exhaust velocity by minimizing restrictions, which helps lower EGTs and unlocks horsepower and torque gains. The design retains your stock catalytic converter, making it a great fit for emissions-conscious builds or those operating in states that require emissions equipment. Its single side exit provides a clean, OEM-style finish while keeping clearances ideal for towing setups or suspension upgrades. Installation is completely bolt-on using factory hangers, and all the necessary hardware is included to get the job done right in your own driveway. Whether you’re using your truck for work, play, or a bit of both, this exhaust system delivers proven performance and long-lasting value. It’s engineered to support your Powerstroke’s potential without compromising its reliability.

Fits: 2003, 2004, 2005, 2006, 2007 Ford F250/F350 6.0L Powerstroke | Retains Factory Catalytic Converter

Notes:

• Fits 2003–2007 Ford F-250 and F-350 6.0L Powerstroke models
• Cat back system retains factory catalytic converter
• T409 stainless steel offers moderate corrosion resistance
• Ideal for customers wanting emissions-compliant performance
• Not legal for use in California due to emissions laws
• Delivers louder and deeper exhaust note than stock
• Includes all necessary clamps and installation hardware
• Designed with a single side exit for a factory-style look
• Uses factory hangers for straightforward bolt-on installation
• Professional installation recommended for best results
• Covered by MBRP’s Limited Warranty for peace of mind