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Manufacturer information. Check the part number and installation requirements for your vehicle.
Supplier details checked 2026-09-23 · Test catalog
Large Bore-HD 4 IN 409 Stainless Steel DPF-Back Exhaust System w/Black Tip GM Diesel Trucks 2016 V8-6.6L (td) LML
Large Bore-HD 4 IN 409 Stainless Steel DPF-Back Exhaust System w/Black Tip
Smooth Transition Bends Allow For Low Turbulence
Massive 6 in. Tip w/Laser-Cut aFe Power Badge
Mandrel Bent Tubing For Maximum Flow
Single To Dual Exhaust Conversion
Factory Mounting Locations
Fits w/Spare Tire
Aggressive Style
aFe LARGE Bore HD 4in Dual DPF-Back SS Exhaust w/Black Tip 16-17 GM Diesel Truck V8-6.6L (td) LML
Large Bore-HD DPF-Back Exhaust System
DPF-Back Exhaust
Interested in a new exhaust system for your LML Duramax? Check out the Large Bore-HD dual DPF-Back exhaust system by aFe. This system is constructed from 4" mandrel-bent 409 stainless steel tubing and uses high quality band clamps and OE-style bayonet hangers. This unit uses all factory mounting locations and comes with a bolt-on bracket that supports the driver side tailpipe. This provides for a quick, hassle-free installation with no modification necessary. Also included in this exhaust system are dual massive 6" high temp black powder-coated stainless steel tips with a laser-cut stainless steel aFe power badges. Large Bore-HD exhaust systems are the perfect combination of performance, fit and value. Single To Dual Exhaust Conversion: This exhaust is designed to convert the standard single exhaust into an aggressive dual exhaust. Fits With Spare Tire: This exhaust system fits perfectly without relocating the spare tire. OE Fit: OE-style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The bayonet tip holds the hanger bushing in place for an OE-style fit that does not change with time. Flow and Performance: This Large Bore-HD exhaust system is constructed from 4" mandrel-bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's. Massive 6" Black Tips: Finishing off the exhaust are dual powder-coated high temp black 304 stainless steel exhaust tips. This tip features a laser-cut stainless steel aFe power badge for an aggressive style.
