Mugen driver Nojiri came out top in a tense late duel with Saturday race winner Ryo Hirakawa (Impul) to take the chequered flag by a margin of 1.6 seconds for his seventh career win, giving himself the championship lead by two points over Hirakawa.
Ritomo Miyata scored his first podium for TOM'S in third place, less than a second behind Hirakawa.