ATK - 1990
Show:
| Overall | Rider | Race | Class | Date | Machine |
|---|---|---|---|---|---|
| 20 | Greg Zitterkopf | Washougal Motocross | 500MX | August 12, 1990 | ATK |
| 10 | Greg Zitterkopf | Spring Creek Motocross | 500MX | August 19, 1990 | ATK |
| 23 | Willy Musgrave | Spring Creek Motocross | 500MX | August 19, 1990 | ATK |