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.
Built from premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer-controlled CNC manufacturing ensures an accurate fit. Best of all, Borla® stands behind every connection pipe with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.