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 bayonet style hangers make sure this system installs cleanly and easily. Product Features:4 in. Mandrel Bent 409 Stainless Steel TubingMaximum FlowHigh Flow MufflerLower EGTs
