K4163A 4 inch Aluminized DPF-Back Dual Exit No Tip Exhaust

Features:

• Vehicle-specific design for your 6.6L Duramax LML
• High-quality Aluminized steel construction
• DPF back configuration
• Mandrel-bent tubing maximizes exhaust flow
• Single-exit system
• Works to boost throttle response and lower EGTs
• Utilizes OEM hangers for easy install
• Exhaust Tips not included
• Backed by a 1-Year Warranty

DPF Back Exhaust Upgrade for Efficiency & Reliability

The Diamond Eye 4in Aluminized DPF-Back Dual Exit No Tip Exhaust features a DPF-back configuration which replaces the restrictive factory exhaust system on your 2011-2015 GM 6.6L Duramax after the Diesel Particulate Filter (DPF). This allows for smoother, unrestricted airflow without compromising emissions compliance. The result is a boost in throttle response, reduced exhaust gas temperatures (EGTs), and improved overall engine performance. You’ll immediately notice improved efficiency and a more responsive truck, especially under load or during heavy-duty applications such as off-roading. Additionally, the dual-exit design provides a modern rear-end look that sets your truck apart from the rest of the pack. And with no tips included, you have the flexibility to customize the final appearance by adding tips that match your style or leaving it bare for a clean and functional look.

Aluminized Steel Construction & Direct-Fit Install

Another standout feature of this exhaust system is its aluminized steel construction, offering excellent durability and impressive resistance to both rust and corrosion. The system was also engineered with 4-inch mandrel-bent tubing to ensure smooth and consistent flow, reducing backpressure and helping to unlock your truck’s full potential. You may even see slight gains in horsepower and torque, as well as an improved exhaust note, adding to the overall driving experience. When it comes to installation, the exhaust bolts directly in place of your truck's factory system using the included hardware provided by Diamond Eye. Best of all, this kit comes backed by a 1-Year Warranty to help keep your investment protected.

Fits: 2011-2015 GM 6.6L Duramax LML

Tip Not Included: This particular kit does not include a tip for the exhaust, luckily we have you covered right here at Alligator Performance!