| 4" Cat back | Cool Duals | 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 MBRP Inc. has dual exhaust systems for the Duramax trucks. The "COOL DUALS"™ really give the big V8 a powerful sound, along with added horsepower and torque throughout the complete power range. Each system is designed as a full bolt on application and comes with all components needed to install right back to the mirror polished 5" diameter exhaust tips that exit out from behind each rear wheel.* Each system designed specifically for the Duramax assures highest quality with performance gains you will feel. System available in: Aluminized 'Installer Series', 409 Stainless 'XP-Series', 304 Stainless 'Pro Series' System fits extended and crew cabs only. | 
