Kammala jumla mai zuwa: Honda ya fara RA273 a zagaye na bakwai na kakar 1966 kuma yana da sabon 3.0L V12 saboda sababbin dokoki. An yi amfani da motar a farkon tsere bakwai na 1967 kuma ya sami nasara a Grand Prix na Afirka ta Kudu. John Surtees ne kawai direba na Honda a 1967, kuma ya lashe
Gasar Italiya tare da RA300. Wannan ce tseren farko na motar. Surtees ya gama kakar wasa ta huɗu a gasar zakarun direbobi kuma Honda ya gama na huɗu a gasar zakarun masu kera, duk da cewa yana da direba ɗaya kawai a lokacin kakar.