Monster Exhaust System 5-inch Single Exit Chrome Tip 20-22 Chevy/GMC 2500/3500 Duramax 6.6L L5P Banks Power5 inch 409 stainless steel constant diameter DPF back system. Negative backpressure SideKick tip helps lower exhaust exit temps by 15 percent. Improves flow and cuts backpressure by 89 percent from the DPF and 9 percent at the turbine inlet, allowing the engine to produce more horsepower. Includes Huge Polished Chrome SideKick tip. Banks Power introduces the new 5 inch Monster Exhaust designed specifically for the 2020 2022 GM 6. 6L Duramax L5P 2500