is a Japanese former motorcycle racer. He has competed in the All Japan Road Race Championship, in the GP125, J-GP3 and ST600 classes. Aged 18, he made his Grand Prix debut in the 2009 Japanese motorcycle Grand Prix as a wildcard entry in the 125cc class. In 2025, he was convicted of robbery and sentenced to eight years in prison.
Personal life In 2024, Yahagi was arrested and indicted for allegedly acting as a perpetrator in a robbery in Saitama. On 8 January 2025, he was arrested again by the Saitama Prefectural Police on suspicion of fraud involving 1.2 million yen. On 21 October 2025, he was sentenced to eight years in prison for robbery.
Career statistics Grand Prix motorcycle racing By season SeasonClassMotorcycleTeamRaceWinPodiumPoleFLapPtsPlcd 125cc Honda Okegawajuku & Endurance 1 0 0 0 0 0 NC 125cc Honda Endurance 1 0 0 0 0 0 NC Total 2 0 0 0 0 0
Races by year (key) Year Class Bike 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Pos. Pts 125cc Honda QAT JPNRet SPA FRA ITA CAT NED GER GBR CZE INP RSM POR AUS MAL VAL NC 0 2010 125cc Honda QAT SPA FRA ITA GBR NED CAT GER CZE INP RSM ARA JPN24 MAL AUS POR VAL NC 0
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