Diamond Eye K4163A 4" Aluminized DPF-Back Dual Exhaust System 2011-2015 Duramax

The Diamond Eye K4163A is a complete 4-inch aluminized steel DPF-back dual exhaust system engineered specifically for 2011-2015 Chevrolet Silverado 2500/3500 trucks equipped with the 6.6L Duramax diesel engine. This performance exhaust system eliminates the restrictive factory exhaust downstream of the diesel particulate filter, significantly improving exhaust flow and reducing backpressure for better throttle response and fuel economy.

Key Features:

• 4-inch mandrel-bent aluminized steel tubing for maximum flow and durability
• DPF-back design maintains emissions compliance while improving performance
• Dual rear exit configuration for aggressive appearance
• Precision CNC mandrel bends eliminate restrictions and turbulence
• Direct bolt-on installation with all necessary hardware included
• Reduces exhaust gas temperatures (EGTs) under load
• Manufactured in the USA with premium materials and craftsmanship

Diamond Eye's mandrel bending process ensures consistent pipe diameter throughout all bends, maintaining optimal exhaust velocity and scavenging. The aluminized steel construction provides excellent corrosion resistance at a value price point. This system is designed for trucks retaining the factory diesel particulate filter and does not require tuning or modification of emissions equipment.