The MBRP XP and PRO exhaust systems for the Dodge Cummins 5.9 diesel is designed to replace the entire factory exhaust system for 1994 and newer model years. The system is manufactured of mandrel bent T-304 or T-409 stainless steel tubing and welded hanger components. T-304 mandrel bent stainless steel is the industries premium material for exhaust system use, the best of the best! Every system is packaged to fit any style pick up cab or bed length. This is accomplished without any cutting, as the tubing is precisely designed for each body and bed style.