5" 409 stainless steel constant-diameter DPF-back exhaust system with patented negative-backpressure SideKick tip. Improves throttle response and fuel economy by lowering backpressure up to 9% at the turbine inlet. Allows the engine to exhale and breathe more efficiently. Includes huge chrome or Cerakote Black obround SideKick tip. The new Banks 5-inch Monster Exhaust designed specifically for Dual Rear Wheel 2019-2023 RAM 6.7L Cummins trucks. The DPF-back exhaust system features constant-diameter 5-inch mandrel-bent 409 stainless steel tubing and a massive patented tip which virtually eliminates backpressure after the DPF and prevents trailer meltdown. Cummins owners can choose from two huge patented 6.5" x 7.5" ob-round slash-cut exhaust tips.Key Features: Virtually eliminates backpressure after the DPF. Constant-diameter 5" mandrel-bent 409 stainless steel tubing. Less backpressure than stock. Huge patented 6.5" x 7.5" ob-round slash-cut exhaust tip. Chrome-plated stainless tip will not turn brown with heat. 1-year Limited Warranty. Ob-Round Exhaust Tip Patent No. D558,111