5 inch Armor Lite Downpipe-Back Single Side Exit Exhaust

Features:

• 5-inch aluminized steel tubing
• Boosts horsepower and torque
• Improves fuel economy up to 2 MPG
• Delivers deep, mellow exhaust tone
• Polished finish for added protection
• Durable 16-gauge steel construction
• Resists wear in dry conditions
• Easy bolt-on, no-drill install
• No vehicle modifications required
• Designed for 2001–2004 Duramax
• Single side exit behind rear tire
• Backed by a 3-year warranty

Stronger Sound, Better Flow, More Muscle

If you’re ready to let your Duramax breathe the way it was meant to, the MBRP 5-Inch Armor Lite Downpipe-Back Exhaust System is the upgrade to make it happen. This system isn’t just about turning heads with a deeper, more aggressive tone—it’s designed to give your truck the kind of airflow it needs to unlock hidden horsepower and torque. By replacing your restrictive stock system with free-flowing 5-inch mandrel-bent tubing, you’ll notice sharper throttle response and better overall drivability. Whether you're towing heavy, daily driving, or just want that unmistakable diesel growl, this kit gives you the sound and performance that feels right for your truck.

Built to Perform, Engineered to Last

Constructed from tough 16-gauge aluminized steel, the Armor Lite system holds up well in dry and moderate climates while still being light enough for easy handling during install. It features a polished finish for a clean look and added surface protection. This kit is built for bolt-on convenience, so there’s no need for drilling or welding during installation. It’s designed to fit extended and crew cab 2500/3500 Duramax models from 2001 to 2004, and clears factory hangers and mounts without hassle. If you’re looking for a no-nonsense, budget-friendly way to boost sound and flow while still sticking to a quality exhaust, this system checks all the right boxes.

Fits: 2001, 2002, 2003, 2004 GM 2500/3500 6.6L Duramax

Application Notes:

• Fits Extended Cab/Crew Cab Models
• Excludes 2002-2004 California Models
• Not for use on vehicles equipped with Catalytic Converter
• Cutting of OEM may be required for installation. No Tip