MBRP 5" Downpipe Back Exhaust Systems | 01-07 Duramax

MBRP's 5" Exhaust Systems offer a slightly louder, deeper and more aggressive tone for those looking to maximize the sound of their truck. These exhaust systems are complete from the downpipe back and include everything needed for a clean and simple bolt on installation.  Aluminized VS Stainless These exhaust systems are available both in the standard aluminized steel as well as the upgraded 409 stainless material. The Aluminized is a great cost effective option for those in dryer climates that do not experience extreme weather or heavily salted roads where the stainless option provides a bit more durability for those in harsher conditions. MBRP's Muffler MBRP's muffler's feature a straight through design with virtually no restriction allowing a slight reduction in overall noise/drone without any loss of performance. We generally recommend these for those that are frequently towing or spend a lot of time on the highway. Fitment Note: These kits are designed to work with all extended an