Diamond Eye K4163S 4" Stainless Steel DPF-Back Dual Exhaust 2011-2015 Duramax 6.6L

The Diamond Eye K4163S is a complete 4-inch stainless steel DPF-back dual exhaust system engineered specifically for 2011-2015 Chevrolet Silverado and GMC Sierra HD trucks equipped with the 6.6L Duramax diesel engine. This mandrel-bent system maximizes exhaust flow while maintaining factory DPF emissions compliance, delivering improved throttle response and enhanced turbo performance.

Key Features:

• Premium T-409 stainless steel construction for superior corrosion resistance and longevity
• Precision mandrel-bent tubing maintains consistent 4-inch diameter throughout for unrestricted exhaust flow
• DPF-back design retains factory diesel particulate filter for emissions compliance
• Dual rear exit configuration provides aggressive appearance and balanced exhaust tone
• Direct bolt-on installation with all necessary hardware and detailed instructions included
• CNC-manufactured components ensure precise fit and professional appearance
• Backed by Diamond Eye's limited lifetime warranty

This system is designed for enthusiasts seeking maximum performance and durability from their Duramax-powered HD truck. The mandrel-bent construction eliminates restrictive crimps and crush bends found in factory exhaust systems, reducing backpressure and allowing the turbocharger to spool more efficiently. The stainless steel construction ensures the system will withstand harsh weather conditions and road salt for years of reliable service.