青山博一
The 250 cc class world championship was won 11 times by riders riding the Honda RS250RW and NSR250: Freddie Spencer (1985), Anton Mang (1987), Sito Pons (1988, 1989), Luca Cadalora (1991, 1992), Max Biaggi (1997), Daijiro Katoh (2001), Dani Pedrosa (2004, 2005) and Hiroshi Aoyama (2009).