| Class | Description |
| Pit Bike Open | Open CC limit 4-stroke pit bike or 6KW max E pit bike, max wheel 14/12, horizontal engine only, age 12+ |
| Pit Bike Stock 110 | 110cc 4-stroke, max wheel 14/12, stock engine, no internal mods, stock carb, stock frame, age 12+ |
| Pit Bike Stock 140 | 140cc 4-stroke, max wheel 14/12, stock engine, no internal mods, stock carb, stock frame, age 12+ |
| Trail Bike Open | 110cc–300cc 4-stroke, 21/18 wheels, comfort parts allowed, age 12+ |
| Trail Bike Youth | 50cc–125cc, 21/18 wheels, age 4–11 |
| Class | Description |
| 65cc JR | 65cc, 14/12 wheels, age 7–9 |
| 65cc SR | 65cc, 14/12 wheels, age 10–11 |
| 65cc Open | 65cc, 14/12 wheels, age 7–11 |
| 85cc JR | 85/150F, 17/14 wheels, age 9–11 |
| 85cc SR | 85/150F, 19/16 wheels, age 12–15 |
| 85cc Open | 85/150F, 19/16 wheels, age 9–15 |
| Supermini | 85–112 / 150F, age 12–16 |
| Class | Description |
| 2‑Stroke Open | Open CC, 21/18 wheels, age 14+ |
| Bomber | Open CC, 1999 or older, age 12+ |
| Women | 125cc+, 21/18 wheels, age 12+ |
| Open A | Open CC, 21/18 wheels, AMA A / Pro |
| Open B | Open CC, 21/18 wheels, AMA B |
| 250 A | 125–250cc 2T / 4T, 21/18 wheels, AMA A |
| 250 B | 125–250cc 2T / 4T, 21/18 wheels, AMA B |
| Open C | Open CC, 21/18 wheels, AMA C |
| 250 C | 125–250cc 2T / 4T, 21/18 wheels, AMA C |
| Schoolboy | 125–250cc, age 12–17 |
| Youth 17–24 | Open CC, age 17–24 |
| Vet 25+ | Open CC, age 25+ |
| Vet 30+ B/C | Open CC, age 30+ |
| Vet 40+ | Open CC, age 40+ |
| Vet 50+ | Open CC, age 50+ |