| 9 | Washougal Motocross | 500MX 500MX | 9 - 12 | August 19, 1984 | Yamaha |
| 8 | Lakewood Sports Cycle Center | 500MX 500MX | 10 - 9 | August 12, 1984 | Yamaha |
| 9 | Spring Creek Motocross | 500MX 500MX | 10 - 12 | August 5, 1984 | Yamaha |
| 7 | Broome-Tioga Sports Center | 500MX 500MX | 10 - 6 | July 22, 1984 | Yamaha |
| 6 | RedBud Track 'n Trail | 500MX 500MX | 8 - 6 | July 1, 1984 | Yamaha |
| 12 | High Point Raceway | 500MX 500MX | 16 - 11 | May 27, 1984 | Yamaha |
| 7 | Six Flags | 500MX 500MX | 13 - 6 | May 13, 1984 | Yamaha |
| 8 | Hangtown Motocross Classic | 500MX 500MX | 5 - 12 | April 8, 1984 | Yamaha |
| 5 | Saddleback Park | 500MX 500MX | 5 - 4 | April 1, 1984 | Yamaha |
| 7 | Gatorback Cycle Park | 500MX 500MX | 8 - 8 | March 4, 1984 | Yamaha |
| 10 | Spring Creek Motocross | 500MX 500MX | 9 - 12 | August 28, 1983 | Yamaha |
| 8 | Lakewood Sports Cycle Center | 500MX 500MX | 10 - 11 | August 21, 1983 | Yamaha |
| 18 | Washougal Motocross | 500MX 500MX | 20 - 13 | August 14, 1983 | Yamaha |
| 22 | RedBud Track 'n Trail | 500MX 500MX | - 19 | July 3, 1983 | Yamaha |
| 16 | Lake Whitney Cycle Ranch | 500MX 500MX | 15 - 18 | June 19, 1983 | Yamaha |
| 17 | Broome-Tioga Sports Center | 500MX 500MX | 15 - 17 | June 5, 1983 | Yamaha |
| 10 | High Point Raceway | 500MX 500MX | 12 - 9 | May 29, 1983 | Yamaha |
| 14 | St Louis International Raceway | 500MX 500MX | 15 - 13 | May 22, 1983 | Yamaha |
| 12 | Gatorback Cycle Park | 500MX 500MX | 11 - 13 | April 24, 1983 | Yamaha |
| 12 | Saddleback Park | 500MX 500MX | 18 - 9 | April 10, 1983 | Yamaha |
| 11 | Hangtown Motocross Classic | 500MX 500MX | 13 - 13 | March 27, 1983 | Yamaha |
