aFe power introduces a true 4" Down-Pipe Back Large Bore-HD exhaust system for 2015.5-2016 GM Diesel Trucks with V8-6.6L (td) engine. This Large Bore-HD down-pipe back exhaust system is constructed from 4" mandrel bent stainless steel tubing for maximum flow, increased horsepower and torque. The down-pipe back is designed with a unique tapered flange to fit the flanged down pipe found on models built after July 2014. This kit uses a 24" free-flowing muffler to absorb high pitch tones producing a powerful sound, then is finished off with a 6" polished stainless steel clamp-on tip with a laser-cut stainless steel aFe power plate for an aggressive style.
Installation is a Snap:
This system uses factory mounting locations providing stability and hassle-free installation.
A unique high quality OE style tapered flange is used for a complete 360 degree sealing surface.
A free-flowing 24" long muffler is used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque out of your rig.
OE style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The Bayonet tips 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 of 4" mandrel bent stainless steel tubing for maximum flow. The smooth transition bends allow for low turbulence, increasing horsepower and torque.
Finishing off the exhaust is a high luster, 6" polished stainless steel clamp-on tip with a laser-cut stainless steel aFe power plate for an aggressive style.
Note: This kit will only fit models manufactured after July 2014 equipped with a flanged down pipe. Does not fit cab & chassis, Fits 133.7 " to 167.7" wheel bases only.
Note: This is a "Race Only" product used solely for competition. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use including recreational off-road use could be in violation of local, state and federal laws. This system also requires an aftermarket electronic module to work properly with the vehicle.