| Year | Photo | Engine | Power | Weight | Seat | Fields |
|---|---|---|---|---|---|---|
| 1989 | – | 243 cc | 20.1 hp | 135 kg | – | 22 |
| 1988 | – | 243 cc | 20.1 hp | 135 kg | – | 22 |
| 1987 | – | 243 cc | 20.1 hp | 135 kg | – | 22 |
| 1986 | – | 243 cc | 20.1 hp | 135 kg | – | 22 |
| 1985 | – | 243 cc | 20.1 hp | 135 kg | – | 21 |
| 1984 | – | 243 cc | 20.1 hp | 135 kg | – | 21 |
| 1983 | – | 243 cc | 20.1 hp | 135 kg | – | 21 |
| 1982 | – | 243 cc | 20.1 hp | 135 kg | – | 21 |
| 1981 | – | 243 cc | 20.1 hp | 135 kg | – | 21 |