Banks Power introduces the new 5 in. Monster Exhaust designed specifically for the 2017-2022 Ford 6.7L F-250/350/450 Super Duty pickup trucks. The DPF-back exhaust system features constant-diameter 5 in. mandrel-bent aluminized steel tubing and a massive patented tip which virtually eliminates backpressure after the DPF. Change Your Look. Super Duty owners can choose from two huge patented 6.5 in. x 7.5 in. ob-round slash-cut exhaust tips; chrome-plated polished stainless steel or high-temp matte black with a rolled edge. And, unlike other brands, Banks chrome-plated stainless tip will not turn brown with heat. Up The Flow. The stock exhaust tubing measures a mere 3.5 in. on the outside, compared to the Monster Exhausts massive 5 in. outer diameter as such the Banks system offers a 110 percent greater flow area than stock.