Hirakawa, a mainstay of Team Impul since 2018, has made the decision to focus on his Toyota commitments in the World Endurance Championship and reserve driver duties in Formula 1 for McLaren.
Motorsport.com reported in September after Hirakawa was unveiled as a McLaren reserve at the Japanese Grand Prix that the number of clashes between the Super Formula and F1 calendars made it unlikely that the 29-year-old would attempt to combine all three programmes.
