aFe Power Large Bore-HD 4" Down-Pipe Back Exhaust for 11-15 GM Diesel 6.6L

Details: Constructed of 4" mandrel-bent stainless steel tubing for maximum flow OE style bayonet hangers are used to maintain a stable pipe location Includes a muffler delete-pipe ...

aFe Power Large Bore-HD 4" Down-Pipe Back Exhaust for 11-16 F250 6.7L Diesel

Constructed from 4" mandrel-bent stainless steel tubing for maximum flow Includes dual side exit 6" matte-black stainless steel clamp-on tips with a laser-cut stainless steel aFe power plate ...

aFe Power Large Bore-HD 4" Down-Pipe Back Exhaust for 11-16 Ford Diesel 6.7L

The aFe Large Bore-HD flange-back exhaust race system is built for maximum performance and extreme mileage gains. This free flowing exhaust system outflows the factory exhaust by 300cfm, is...

aFe Power Large Bore-HD 4" Down-Pipe Back Exhaust for 17-19 Silverado 2500HD

Constructed from 4" mandrel-bent 409 stainless steel tubing Dual rear-exit 5" black stainless tips OE-style bayonet hangers for hassle-free installation Includes a bolt-on bracket that supports the...

aFe Power Large Bore-HD 4" Down-Pipe for 03-07 F250 6.0L Diesel

The aFe performance down pipe enhances air flow enhancing performance over the factory down pipe feeding the rest of the exhaust system. Stainless steel construction provides a long lasting finish.

aFe Power Large Bore-HD 4" Downpipe Back Exhaust for 11-15 GM Diesel 6.6 LML

GM Diesel Trucks 11-15 V8-6.6L (td) LML

aFe Power Large Bore-HD 4" Downpipe Back Exhaust for 11-16 F250 6.7L

Details: Constructed of 4" mandrel-bent stainless steel tubing for maximum flow OE style bayonet hangers are used to maintain a stable pipe location Includes a muffler delete-pipe ...

aFe Power Large Bore-HD 4" DPF-Back Exhaust Black Tip for 16-19 Titan XD 5.0L

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...

aFe Power Large Bore-HD 4" DPF-Back Exhaust for 11-12 Ram 2500 6.7L Diesel

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 Power Large Bore-HD 4" DPF-Back Exhaust for 11-14 Ford Diesel 6.7L

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...

aFe Power Large Bore-HD 4" DPF-Back Exhaust for 17-19 Ford Diesel 6.7L V8

Flow and Performance: This Large Bore-HD exhaust system is 100% hand MIG-welded and Constructed from 4" mandrel-bent 409 stainless steel tubing for maximum flow. The smooth transition bends allow for...

aFe Power Large Bore-HD 4" DPF-Back Exhaust for 17-19 GM Diesel 6.6L V8

Interested in a new exhaust system for your L5P 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...