These 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.
Click on any image above to enlarge.
Vehicle(s) shown may vary from your specific model.
Note: Products are shipped un-polished unless otherwise indicated. Image shown may be a polished version. Tip style may vary.