HKS Super SQV4 Return Kit Plus for Honda Civic Type R (FL5)

Fits Honda Civic Type R (FL5).

The HKS Super SQV4 Return Kit Plus provides a complete blow-off valve solution for the FL5 chassis, combining the legendary Super SQV4 sequential valve with the specific hardware needed for proper air recirculation. Unlike standard atmospheric valves, this "Plus" kit includes the necessary suction return components to route discharged air back into the intake system. This is critical for maintaining stable engine management and preventing rich-running conditions or stalling on vehicles equipped with sensitive Mass Air Flow (MAF) sensors.

The Super SQV4 utilizes a unique sequential valve structure and a differential pressure control system, allowing for a broad operating range. The pull-type relief design ensures the valve remains closed under boost and reacts instantly to pressure differentials, regardless of the boost pressure being used.

• Sequential Valve Design: Dual-stage relief ensures consistent performance and rapid response from low to high boost.
• Recirculation Hardware: Includes the return piping and fittings required to recirculate air back into the intake stream.
• Pull-Type Relief Valve: Features a nickel-plated, die-cast aluminum secondary valve for long-term durability and reliable sealing.
• Vehicle Specific Fitment: Engineered for the FL5 Honda Civic Type R with all necessary brackets and vacuum lines included.