The Large Bore HD Performance DPF-Back exhaust features 4" 409 stainless steel tubing with smooth curves and increased size to help remove restriction and keeps exhaust gasses flowing smoothly. The OE style band-clamps and bayonnet style hangers make sure this system installs cleanly and easily. Large Bore-HD 3-1/2in 409 Stainless Steel DPF-Back Exhaust System w/Black Tip GM Colorado/Canyon 16-19 I4-2.8L (td) LWN GM Colorado/Canyon 16-18 I4-2.8L (td) LWN
