| Nippers 4-9yrs - non-competitive (4-9yrs, no bike size limitation, judged instead on rider capability on the day of the event) |
| 50cc 7-9yrs - 50cc competitive - 50cc max (all bike types) |
| 65cc 7-12yrs - 65cc 2 stroke / 110cc 4 stroke (We recommend trail class for most 110cc 4 stroke riders) |
| Trail Class 7-12 yrs - must be air cooled 4 stroke max 150cc |
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85cc 9-12yrs - max 85cc 2 stroke/max 150cc 4 stroke (no bar height or wheel size restrictions)
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| 85cc 13-16yrs - max 85cc 2 stroke/max 150cc 4 stroke (no bar height or wheel size restrictions) |
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Junior pro lites 13-16yrs - max 150cc 2 stroke or 250cc 4 stroke * up to 200cc 2 stroke if ADR compliant *
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