Until recently, Formula Nippon was an open formula – chassis were supplied by Lola, Reynard and G-Force, while Mugen-Honda supplied most engines.
Ata hai pouco, a Fórmula Nippon era unha fórmula aberta, o chasis fornecíano Lola, Reynard e G-Force, mentres que Mugen-Honda fornecía a maioría dos motores.