The HKS Super SQV IV (Super Sequential Blow Off Valve) has been designed for strength and durability, featuring a high quality aluminium die-cast body, high rigidity metal die-cast valve. The HKS SSQV IV retains the well known unique high frequency sound that can be further tuned with the special fins available.
The HKS SSQV IV features a unique sequential valve structure, with a primarily and secondary valve system, providing the perfect amount of pressure relief at a wide range of boost levels.
Features
- Latest release from HKS Japan in April 2011
- High quality aluminium die-cast body with silver paint
- High rigidity metal die-vast valve section to ensure long lasting durability
- Triple fin for unique high frequency sound, the HKS Special Fin is also available for various different sounds
- Re-circulation possible with the HKS SSQV IV Return Kit available separately for a number of vehicles
We ship to the United States and 150 other countries.
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HKS was founded in October 1973 by Hiroyuki Hasegawa, a former Yamaha engineer, and Goichi Kitagawa, with start-up capital from Sigma Automotive; the name comes from Hasegawa, Kitagawa and Sigma. It began in a small shed at the foot of Mount Fuji, in Fujinomiya, Shizuoka, and is still based there.
In 1974 HKS built one of the first bolt-on turbo kits, for the Nissan L20 engine in the Skyline, raising output from 115 to 160 PS. Turbocharging made its name; today it also makes exhausts, springs, shocks and coilover suspension, and it marked its 50th anniversary in 2023.











