King OEM performance kit custom tuned to provide your 03-21 4RUNNER with unparalleled levels of performance and ride quality. Each kit has been subjected to punishing real world testing to develop the optimal damping curve for your vehicle. Easy bolt-on installation for stock height or custom kits for trucks running lifted aftermarket suspensions. 25001-125-EXT, OPT-OEM-1080, 2x OPT-PR25-1081 (black hoses) black stickers. PURPLE ANODIZING ON PARTS AND RESERVOIRS.