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The HKS SSQV4 Black plus return kit is a blow-off valve solution for 2008–2014 Subaru Impreza WRX STI and 2015+ WRX STI GRB/VAB platforms, offering the Super Sequential Blow-Off Valve behavior with a return mechanism for stable operation. It provides controlled pressure release during throttle lift to protect turbocharger systems while delivering the characteristic SQV sound. The kit targets compatible Subaru turbo setups with required fittings.
HKS 08-14 Subaru Impreza WRX STI/ 2015+ WRX STI SSQV4 Black + Return Kit GRB/VAB
