Banks Power Monster Exhaust System (2020-2023 GM HD Single Rear Wheel 6.6 Diesel)5 inch aluminized steel constant diameter DPF back system. Patented negative backpressure SideKick tip helps lower exhaust exit temps by 15%. Improves flow and cuts backpressure by 89% from the DPF and 9% at the turbine inlet, allowing the engine to produce more horsepower. Includes Huge Polished Chrome Patented or Cerakote Black SideKick tip. US Patent #D558,111 S CARB E. O. Not Required Fits : Double Cab Short Bed : Double Cab Long Bed : Crew Cab