Description
aFe ATLAS 5" Aluminized Steel DPF-Back Exhaust System
The aFe ATLAS 5-inch DPF-Back Exhaust System is engineered to deliver improved exhaust flow, enhanced durability, and aggressive styling for 2016 LML Duramax-equipped GM HD trucks. Designed as a direct replacement for the restrictive factory exhaust, this system strikes the perfect balance between performance, OE-level fitment, and value.
Constructed from 5-inch mandrel-bent aluminized steel tubing, the ATLAS exhaust system maximizes exhaust velocity while reducing backpressure. Smooth, constant-diameter bends promote efficient airflow, helping to increase horsepower and torque while lowering exhaust gas temperatures (EGTs)—all without compromising emissions equipment.
OE Fitment with Hassle-Free Installation
This DPF-back system installs using all factory mounting locations, ensuring a stable, secure fit with no unnecessary modifications. OE-style bayonet hangers keep the exhaust properly positioned under high heat and vibration, maintaining consistent alignment over time. High-quality stainless steel band clamps are included to provide a complete 360-degree, leak-free seal.
⚠️ Note: Cutting may be required for certain cab and bed configurations.
High-Flow Performance Design
The ATLAS exhaust utilizes 5-inch mandrel-bent tubing to eliminate flow restrictions found in factory exhaust systems. The result is reduced turbulence, improved exhaust scavenging, and enhanced throttle response—ideal for daily driving, towing, or performance applications.
Aggressive 6" Black Intercooled Exhaust Tip
Finishing the system is a massive 6-inch diameter slash-cut exhaust tip, constructed from 304 stainless steel and finished in a durable black wrinkle powder coat. Integrated intercooling vents help reduce exhaust gas temperatures at the tailpipe, while a laser-cut stainless steel aFe POWER logo plate delivers a bold, performance-driven appearance.
Key Features & Benefits
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5" mandrel-bent aluminized steel tubing
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DPF-back configuration (retains emissions equipment)
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Improved exhaust flow, horsepower, torque, and lower EGTs
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OE-style bayonet hangers for long-term fitment stability
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High-quality band clamps for leak-free sealing
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Uses all factory mounting points
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Aggressive 6" black stainless steel intercooler-style exhaust tip
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Designed, engineered, and manufactured in Corona, California
Cab & Bed Fitment
Fits 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:
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Only fits 2016 Silverado/Sierra 3500HD models equipped with a NOx sensor
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Cutting may be required depending on cab configuration
Emissions Disclaimer
This product does not require a CARB EO number.
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
Upgrade your truck with the aFe ATLAS 5” DPF-Back Exhaust System—engineered for superior flow, rugged durability, and an aggressive finish, all with factory-quality fitment you can trust.
