Japan’s top single-seater series has traditionally introduced a new car every five years, with the introduction of the current Dallara-constructed car in 2019 following five years after the arrival of the previous SF14 chassis.
However, the boss of series promoter JRP Yoshihisa Ueno clarified to Motorsport.com at Fuji Speedway last weekend that its programme to improve the energy efficiency and raceability of the SF19 has in effect replaced plans for a new chassis.
