HKS Super SQV IV Blow-Off Valve (Silver) - Subaru WRX STI GRB/GRF/GVB/GVF (2008-2020)

Name: Subaru WRX STI 14/08-20/04 SSQV4 (Silver) BOV Kit HKS
Brand: HKS
SKU: HKS71008-AF013
Price: 413 EUR
Availability: InStock

The HKS Super SQV IV (Silver) is a high-performance blow-off valve developed for the Subaru WRX STI GRB, GRF, GVB, and GVF (2008-2020). Its advanced sequential dual-valve system, combined with the proven pull-type valve design, provides rapid and controlled boost pressure release when the throttle closes. This helps reduce compressor surge and minimise stress on the turbocharger while producing the signature HKS blow-off valve sound.

The valve uses an intelligent two-stage operating system where the primary valve opens first to release the initial excess boost pressure, while the secondary valve is activated under higher boost conditions to increase discharge capacity. During acceleration, both valves remain securely closed thanks to the pull-type valve design, minimising the risk of boost leakage and ensuring stable performance across a wide range of boost pressures. This makes the SQV IV equally suitable for standard vehicles and higher-boost performance builds.

The robust silver-finished die-cast aluminium body and all-metal valve construction provide excellent heat resistance, outstanding durability, and long-lasting performance even under demanding operating conditions. The supplied triple-fin insert produces the classic HKS sound, while optional replacement sound inserts allow enthusiasts to customise the valve's sound profile. With direct bolt-on installation and OEM-style fitment, the HKS Super SQV IV is an excellent upgrade for street and track use.

Features

Designed for Subaru WRX STI GRB, GRF, GVB, and GVF (2008–2020).
Genuine HKS Super SQV IV Blow-Off Valve (Silver).
Sequential dual-valve system for rapid and efficient boost pressure release.
Pull-type valve design helps keep the valve securely sealed under boost.
Two-stage operation with primary and secondary valves for stable performance across a wide range of boost pressures.
Helps reduce compressor surge and minimise stress on the turbocharger.
Silver-finished die-cast aluminium valve body.
All-metal valve construction for outstanding durability.
Triple-fin insert produces the signature HKS blow-off valve sound.
Optional replacement sound inserts available separately.
Direct bolt-on installation with OEM-style fitment.
Suitable for street and track use.

Product video

Technical specification

Article nr:

HKS71008-AF013

Manufacture Partnumber:

71008-AF013

Passar följande Bilar:

Subaru	WRX STI	VAB	EJ20(TURBO)	14/08-20/04
Subaru	IMPREZA WRX STI	GVF	EJ257	10/07-14/08
Subaru	IMPREZA WRX STI	GVB	EJ207	10/07-14/08
Subaru	IMPREZA WRX STI	GRF	EJ257	09/02-14/08
Subaru	IMPREZA WRX STI	GRB	EJ207	07/10-14/08

In October 1973, two talented and young engineers had a vision; to design and build high performance engines and components that major OE manufacturers could not, or would not, produce. HKS pioneered the Japanese aftermarket industry by delivering a host of exciting new products, including the first commercially available electronic turbo timer and boost controller. Other early products included piggy-back ECUs and sophisticated fuel management tools. HKS was clearly driving performance trends for Japanese vehicles forward!

Today, HKS is one of the world's most well-known brands and the obvious choice for you who builds a JDM car. In the assortment you will find everything from chassis products to exhaust systems and turbo kits. HKS is behind some of the coolest builds and professional drivers in the world, so when you choose HKS, you choose the best.