hks71008-AT021V
The HKS Super SQV IV Blow-Off Valve with Return Kit is a high-performance turbocharger upgrade engineered specifically for the Toyota GR Supra B58 engine. Designed by HKS — a world-renowned leader in forced induction technology — this vehicle-specific kit delivers both enhanced turbo response and the signature HKS blow-off sound, while maintaining proper recirculation for street use.
This HKS kit brings one of the most coveted aftermarket blow-off solutions to the Supra platform, combining performance upgrades with the classic auditory feedback enthusiasts seek. The sequential valve design supports optimal boost control and helps reduce compressor surge during throttle transitions, making the driving experience more engaging and refined compared to stock components.
Sequential Blow-Off Valve (Super SQV IV) Design — Utilizes a unique dual-valve, sequential structure with a differential pressure control system that ensures stable, consistent operation under both low and high boost pressures.
Iconic HKS Sound — Produces a high-frequency, sharp blow-off tone that HKS is famous for, even on engines like the Supra’s valvetronic B58 that typically don’t create strong intake manifold vacuum.
Durable Construction — Replaces the factory resin charge pipe with a precision aluminum design to reduce airflow resistance and improve long-term durability.
Complete Return (Recirculation) Kit — Includes the suction return plumbing needed for use with the stock airbox, ensuring the excess boost is properly recirculated back into the intake system for reliable street performance and drivability.
HKS Super SQV IV blow-off valve
Aluminum charge pipe
Suction return/recirculation kit for stock airbox
Mounting hardware and vacuum fittings
**Not CARB Legal**
