Ryo Shirasaki wins 2026 Japanese F4 with eight victories as Kageyama Racing takes teams' title and Hirobon wins Independent Class.
Photo Credit: Japanese F4

A review of 2026 Japanese F4 Championship: Shirasaki dominates as Kageyama Racing claims title double

The 2026 Japanese F4 Championship delivered a season of remarkable comebacks, breakthrough victories and closely contested championship battles. Across seven rounds, 14 Champion Class races and 13 Independent Class contests, Ryo Shirasaki and Hirobon emerged as the respective Drivers’ Champions, while HYDRANGEA Kageyama Racing and TEAM 5ZIGEN secured the Teams’ titles. Shirasaki produced one of…

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