Founded in 1973 by engineers Hiroyuki Hasegawa and Goichi Kitagawa—with backing from Sigma—HKS emerged at the foot of Mount Fuji to build high-performance components that OE manufacturers wouldn’t develop. The company pioneered aftermarket innovation with the first plug-and-play turbo kits (1974), electronic turbo timers, boost controllers, and piggyback fuel computers.

HKS combines Japanese manufacturing excellence with motorsport pedigree. They’ve engineered record-setting cars—from the M300 Celica (300 km/h) to the Tsukuba Time Attack TRB‑series and GT1000+ R35 GT‑R—all driving product refinement. Their product lineup spans turbochargers, exhaust systems, superchargers, intakes, suspension, ECUs, full engine packages, and more—designed with OEM-style fitment and race-grade performance.

After founding HKS USA in 1982, the company reestablished its North American branch in 2017 to ensure dedicated support and distribution. With over 50 years in tuning, engineering, and racing, HKS remains an iconic global brand—synonymous with innovation, reliability, and performance in both the aftermarket and motorsport arenas.