Mugen driver Sasahara was the prime beneficiary of the second of two safety car periods in an eventful 40-lap race, triggered by the Impul machine of Sekiguchi stopping after losing its left-rear wheel.
Sekiguchi had just exited the pits well clear of early-stopping rival Tomoki Nojiri at the end of lap 25, thanks to a lightning quick mandatory pitstop, having led the entire race up to that point from pole.
