Description
aFe ATLAS 4” Aluminized Steel Dual DPF-Back Exhaust System
Upgrade your 2016 LML Duramax-powered GM HD truck with the aFe ATLAS Dual 4-Inch DPF-Back Exhaust System. This bolt-on performance exhaust converts your factory single exhaust into an aggressive dual exhaust setup, improving horsepower, torque, and exhaust flow while retaining factory mounting points and emissions compliance.
Constructed from 4-inch mandrel-bent aluminized steel tubing, the ATLAS system provides low-turbulence flow and maximizes exhaust scavenging. Its mitered merge collector enhances performance, while smooth bends help reduce exhaust gas temperatures (EGTs) for better durability during towing or heavy-load conditions.
Single-to-Dual Conversion
This system transforms the standard single-exit exhaust into a bold dual-exit design, providing enhanced performance and a deep, aggressive exhaust note without relocating your spare tire.
OE Fit & Easy Installation
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Uses all factory mounting locations for a straightforward, bolt-on installation
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Equipped with OE-style bayonet hangers to maintain precise pipe alignment under vibration and heat
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Includes a bolt-on bracket to support the driver-side tailpipe
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High-quality band clamps provide a leak-free 360° seal
Installation is simple, with no modifications required for most configurations. ⚠️ Some cab configurations may require minor cutting.
Flow and Performance
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4” mandrel-bent aluminized steel tubing for maximum exhaust flow
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Smooth bends reduce backpressure and improve horsepower, torque, and EGTs
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Mitered merge collector enhances scavenging for better performance
Dual 6” Matte-Black Stainless Steel Tips
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Dual high-temperature powder-coated 304 stainless steel tips
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Slash-cut design with laser-cut aFe POWER logo badges
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Aggressive styling and reduced tailpipe temperatures with intercooling vents
Vehicle Fitment
Compatible with the following configurations:
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Extended Cab / Short Bed (6.6 ft) – 143.5" Wheelbase
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Crew Cab / Short Bed (6.6 ft) – 153.7" Wheelbase
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Extended Cab / Long Bed (8 ft) – 158.1" Wheelbase
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Crew Cab / Long Bed (8 ft) – 167.7" Wheelbase
⚠️ Fitment Note: This system is designed for 2016 3500HD models with a NOx sensor. Some cab configurations may require minor cutting.
Emissions Disclaimer
This product does not require a CARB EO#.
Vehicle Applications
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2016 Chevrolet Silverado 2500HD / 3500HD – 6.6L LML Duramax
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2016 GMC Sierra 2500HD / 3500HD – 6.6L LML Duramax
Enhance your truck with the aFe ATLAS 4” Dual DPF-Back Exhaust, engineered for maximum flow, bold styling, and OE-quality fitment.
