The HKS Super SQV Special Fin SF120-G (color: gold) has the same shape and sound quality as the standard fin, and produces a high-frequency sound with a strong presence in the entire range from low to high boost. The SF100-P (color: purple metallic) emphasizes the sequential sound that resonates in two stages, and features a flat sound quality that suppresses the volume of high frequencies, which is different from the standard fin.
Features
SF120-G (Gold)
High Frequency sound echo, much like the sound of a supercharger
SF100-P (Metallic Purple)
Emphasised sequential sound in 2 stages, louder more distinct sound.
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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.











