This DPF back 5" exhaust system from Banks Power is the ultimate in fit and functionality for your 6.7 Powerstoke. This kit features a constant diameter 5" mandrel bent aluminized steel tubing and a massive patented tip that will virtually eliminate backpressure after the DPF. This system offers a 110% greater flow area than the factory exhaust, and a 82% drop in backpressure leading to more power and increased fuel economy. A huge 6.5" x 7.5" ob-round black slash cut tip finishes this system off for a true unique look.