Banks 5" aluminized steel constant-diameter DPF-back exhaust system with 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 and redirects hot exhaust gas to the side. Prevents trailer meltdown with 15% lower temps behind the tip. Includes huge chrome or Cerakote Black obround SideKick tip. Key Features: 5" aluminized steel constant-diameter DPF-back exhaust system. 15% reduction in exhaust temperature 2 feet behind the tip during regen. Huge 6.5" x 7.5" ob-round slash-cut exhaust tip. 85% less backpressure than stock. Ob-Round Exhaust Tip. 1-Year Limited Warranty