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aFe LARGE BORE HD exhaust systems are constructed from mandrel-bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower and torque, while...

This Mach FORCE Xp exhaust system is constructed of 5" mandrel-bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and...

Engineered to perform in the most extreme environments. Constructed from mandrel bent 4 in. 409 stainless steel tubing for maximum flow; increased horsepower; increased torque and lower EGTS. All...

5" 409 Stainless Steel Construction: This DPF-back exhaust system is constructed of 5" mandrel-bent 409 stainless steel tubing for maximum strength and durability.7" Diameter Black Exhaust Tip:...

The Large Bore HD Performance DPF-Back exhaust features 4" 409 stainless steel tubing with smooth curves and increased size to help remove restriction and keeps exhaust gasses flowing smoothly. The...

Engineered to perform in the most extreme environments. Constructed from mandrel bent 4 in. 409 stainless steel tubing for maximum flow; increased horsepower; increased torque and lower EGTS. All...

Engineered to perform in the most extreme environments. Constructed from mandrel bent 4 in. 409 stainless steel tubing for maximum flow; increased horsepower; increased torque and lower EGTS. All...

Engineered to perform in the most extreme environments. Constructed from mandrel bent 4 in. 409 stainless steel tubing for maximum flow; increased horsepower; increased torque and lower EGTS. All...

aFe LARGE BORE HD exhaust systems are constructed from mandrel-bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower and torque, while...

This DPF-back exhaust system is constructed of 3" mandrel-bent 304 stainless steel tubing for maximum strength and durability. Finishing off this exhaust system is a 4-1/2" diameter black 304...

aFe LARGE BORE HD exhaust systems are constructed from mandrel-bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower and torque, while...

This DPF-back exhaust system is constructed of 5" mandrel-bent 409 stainless steel tubing for maximum strength and durability. Finishing off this exhaust system is a 6" diameter black 304 stainless...

This DPF-back exhaust system is constructed of 3 IN mandrel-bent 409 stainless steel tubing for maximum strength and durability. Finishing off this exhaust system is a 4-1/2" diameter black 304...

Interested in a new exhaust system for your LML Duramax? Check out the Large Bore-HD DPF-Back exhaust system by aFe. This system is constructed from 5" mandrel-bent 409 stainless steel tubing and...

The Large Bore HD Performance DPF-Back exhaust features 4" 409 stainless steel tubing with smooth curves and increased size to help remove restriction and keeps exhaust gasses flowing smoothly. The...