MBRP 15-16 F250/F350/F450 6.4L PS CC/SC AL Steel 4in Filter-Back Single Side - No Muffler w/ DPTHE BEST BANG FOR YOUR BUCK ARMOR LITE Series exhaust systems are a value option with the same fitment, performance and sound as the premium products from MBRP. Heavy gauge Aluminized Steel tubing helps to resist dings and dents caused by debris under your vehicle. This material can be a great choice for you if you live in a dry climate that doesnt see much precipitation, or if youre looking for great sound on a budget. All of the tubing is mandrel