Pipes include valves and are intended to add the NPP (dual mode option) to a system that did not come with the necessary valves (11920, 11921). They can only be used with mufflers that have dual tips exiting the mufflers. Wiring is not included. They are not intended to add NPP to a vehicle that was not originally equipped. Exhaust Control Valve Kit. 2016-2019 Chevrolet Camaro SS 6.2L V8 Automatic/ Manual Transmission 2-Door, equipped with Dual Mode Exhaust (NPP) or Dual Split Rear Exit bumper.
