4″ Downpipe Back Delete Cab & Chassis no Muffler | 17-19 Duramax

431025-887NM Mel’s Manufacturing | 4″ Downpipe Back Delete Cab & Chassis no Muffler | 17-19 Duramax

17-19 Cab & Chassis 4″ Downpipe Back Delete Exhaust no Muffler by Mel’s Manufacturing (formerly Flo Pro) are an ideal solution to pair with a race tuner and delete your diesel particulate filter (DPF) off your diesel pickup truck. You must use a tuner when removing the DPF off of the vehicle.