The AFE 49-440XX MACH Force XP 5" Race Exhaust System for your 2011-2016 GM 6.6L Duramax iis engineered to perform in the most extreme environments. This system is constructed from mandrel bent 5" T409 stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGTs. MACH Force XP exhaust systems are the perfect combination of performance, fit and value.Features:
With Muffler (Black Tip) 49-44029-B
With Muffler (Polished Tip) 49-44029-P
Without Muffler 49-44030
Warning: This free-flow race exhaust system requires the use of an aftermarket performance programmer with off-road tuning.
We no longer offer a DPF “off road” programmer for the 11-12 6.6L being the manufactures have discontinued the products.