Grimmspeed Stealthbox Intake (Black) - Subaru WRX VA Seats & Rails - HKS Core Size in

- HKS Core Size in mm: 695x178x100 vs Stock Core Size in mm: 680x143x64

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Grimmspeed Stealthbox Intake (Black) - Subaru WRX VA Seats & Rails - HKS Core Size inIntroduction Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake system for the 2015+ WRX. Of course performance is the highest priority, but at GrimmSpeed so much more than that goes into a product. We wanted an intake that purred quietly under normal driving circumstances, but would roar at wide open throttle. We wanted an intake that looked at home in the well sported 2015+ WRX engine bay instead