| MBRP S6004409 4" 409 Stainless Turbo Back for 01-07 GM 6.6L Duramax - Includes 5" Tip 4" Turbo back | 409 Stainless steel exhaust | Mandrel bent tubing | Increased horse power | Lower EGT's | Direct bolt on system | Install's in less than two hours MBRP is the industries leader for high quality, mandrel bent exhaust systems. We have systems to fit every need. Need turbo back, need Cat back, need turbo back but still keep it legal, we have them all. If you need help finding a system to fit your needs, call 1-866-255-7212 Exhaust tip not included |