HKS Super SQV IV Dump Valve Kit Specification AUTHENTICITY GUARANTEED! DriftShop is an official distributor of HKS Europe. Our HKS products are 100% authentic! HKS Super SQV (for SeQuential Blow Off Valve) is the current benchmark in the market either in terms of performance endurance or quality/Retail EUR inc VAT ratio. Its sequential design ensures superior reliability and function which allows for a broad operating range from low boost to high boost. Its Pull-Type relief design ensures stable operation regardless of the amount of boost pressure. This kit is universal requiring adaptation to your specific application. Black Edition limited edition !