HKS has been conducting various businesses. Design, development, and manufacturer of automobile parts including original exhaust systems and suspension, turbocharger, electronic parts, and related parts are mainstream.
Development of race engine and ultralight plane engine are also highly regarded. Furthermore, by utilizing the technology accumulated through development of the gasoline engine parts, modification of a diesel engine to convert to a natural gas engine and development of the Bi-fuel system development have carried out. HKS continues to challenge new business from now on.

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