| Year | Grand Prix | No. | Team | Maufacturer | Grid | Position | Pts Points |
|---|---|---|---|---|---|---|---|
| 1987 | Japanese Grand Prix | Team HRC | Honda | Ret | 0 | ||
| 1988 | Japanese Grand Prix | Team HRC | Honda | 4 | 13 | ||
| 1989 | Japanese Grand Prix | Marlboro Yamaha Team Agostini | Yamaha | 8 | 6 | 10 | |
| 1992 | Japanese Grand Prix | Yamaha Motor Banco | Yamaha | 7 | 4 | ||
| 1993 | Japanese Grand Prix | 11 | Valvoline Team WCM | ROC Yamaha | 17 | 13 | 3 |
| 1994 | Japanese Grand Prix | Slick 50 Team WCM | ROC Yamaha | 19 | 0 | ||
| Avg. | 12.5 | 9.8 | 7.5 |
