The HKS Super SQV 4 (Sequential Blow Off Valve) delivers precise boost control and the signature sharp HKS sound. Built from premium materials and a dual-valve design, it offers consistent performance under both high boost and low boost conditions.

• Sequential valve structure: Ensures stable operation from low boost response to high boost pressure discharge.

• Pull-type relief design: Maintains reliable boost no matter the level or throttle conditions—no leakage under pressure.

• High-quality construction: Cast aluminum body and stainless steel valve assembly for durability and heat resistance.

• Distinctive discharge sound: The crisp, well-known HKS “chirp” produced by precise airflow tuning.

• Compact, versatile fitment: Compatible with a wide range of turbocharged applications.

Ideal for performance setups that demand consistent boost response, durability, and unmistakable sound control from one of the most trusted names in forced induction.