71004-AF013 HKS Super Sequential Valve: 08+ WRX STI (GRB)
71004-AF012 HKS Super Sequential Valve: 08+ WRX 5dr (Base)
HKS Super SQV (Super Sequential Blow Off Valve) uses a unique sequential valve structure and a differential pressure control system, which allows for a broad operation range from low boost to high boost. All vehicle specific Super SQV kits include both the HKS Triple Fin Sound insert and Recirculation insert.
