| 22 | Carl Hand | Spring Creek Motocross | 500MX | August 28, 1983 |
| 16 | Andy Stacy | Lakewood Sports Cycle Center | 500MX | August 21, 1983 |
| 25 | Phillip Oveland | Lakewood Sports Cycle Center | 500MX | August 21, 1983 |
| 11 | Andy Stacy | Washougal Motocross | 500MX | August 14, 1983 |
| 10 | Andy Stacy | RedBud Track 'n Trail | 500MX | July 3, 1983 |
| 10 | Andy Stacy | Lake Whitney Cycle Ranch | 500MX | June 19, 1983 |
| 23 | Dennis Hawthorne | Lake Whitney Cycle Ranch | 500MX | June 19, 1983 |
| 15 | Andy Stacy | Broome-Tioga Sports Center | 500MX | June 5, 1983 |
| 22 | Carl Hand | Broome-Tioga Sports Center | 500MX | June 5, 1983 |
| 22 | Andy Stacy | High Point Raceway | 500MX | May 29, 1983 |
| 23 | Alan Pizzino | High Point Raceway | 500MX | May 29, 1983 |
| 13 | Andy Stacy | St Louis International Raceway | 500MX | May 22, 1983 |
| 15 | Andy Stacy | Gatorback Cycle Park | 500MX | April 24, 1983 |
| 22 | Greg Mayo | Gatorback Cycle Park | 500MX | April 24, 1983 |
| 16 | Andy Stacy | Saddleback Park | 500MX | April 10, 1983 |
| 20 | David Gerig | Saddleback Park | 500MX | April 10, 1983 |
| 22 | Phillip Oveland | Saddleback Park | 500MX | April 10, 1983 |
| 13 | Andy Stacy | Hangtown Motocross Classic | 500MX | March 27, 1983 |
| 20 | Phillip Oveland | Hangtown Motocross Classic | 500MX | March 27, 1983 |