HKS 08-11 STi SSQV4 BOV kit - HKS71008-AF013

The HKS Super SQV4 (Sequential Blow-Off Valve) kit is engineered for 2008–2011 Subaru WRX STI models. This precision blow-off valve system features a pull-type relief valve and differential pressure control technology that eliminates boost leaks and prevents compressor surge. The result is improved turbo response and the iconic HKS triple-fin signature sound that enthusiasts demand. 

Features:

• Pull-Type Relief Design:  The pull-type system ensures stable operation and precise pressure relief regardless of the amount of boost, preventing leakage at high boost and failing to open at low boost.
• Sequential Dual Valve Structure: Features a primary valve for immediate discharge at low boost, and a secondary valve that opens concurrently during high-boost ranges to provide a linear response.
• Iconic Sound: Utilizes HKS's signature triple-fin design in the discharge funnel to produce a highly recognizable blow-off sound.
• Durable Construction: Built with a silver-coated, die-cast aluminum body and a nickel-plated die-cast secondary valve.