4" CAT & DPF DELETE PIPE WITH MUFFLER | 20-22 SUPER DUTY F-450/F-550 CAB & CHASSIS 6.7LImportant Note: This product requires the use of aftermarket tuning
MBRP 3" TURBO DOWN PIPE ; 15-16 SILVERADO/SIERRA HD 6.6L DURAMAX Greater Heat Retention 20 Percent Greater Flow Over Stock Richer Diesel Sound Will Not Affect Emissions Gains Of +21...