 For 2009, Nakagami joined another Italian team called Ongetta I.S.P.A.Aprilia he improved his overall performance finishing 16th overall with a best results of two 5th places at a wet Le Mans and Donington Park.Despite having offers to remain in the 125cc championship in 2010, Nakagami decided to return to Japan and re join the Harc-Pro team, competing the Japanese ST600 championship aboard a Honda, Nakagami won the first race of the season at Tsukuba.