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2008 Class Structure
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51cc 4-6
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51cc 7-8
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51cc 4-8 SS: air cooled , water cooled & oil injected
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51cc 4-8 Trail
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65cc 7-9: trophy only; must choose one 65cc class per day
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65cc 7-11: must choose one 65cc class per class
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85cc C
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85cc 7-11
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85cc 12-15
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85cc 9-13
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Supermini: age 12-16, 79-112cc 2-stroke, 75-150cc 4-stroke (mini bikes or big wheels), "A" riders not eligible
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Schoolboy: age 12-16, 86-125cc 2-stroke, 75-150cc 4-stroke, min front wheel 19", min rear wheel 16", "A" riders not eligible
All Classes below are 53" wheelbase minimum
(except women's as noted)
- 125 B/C: 122 – 125cc, trophy only (no advancement points)
- 250 A: 122 – 250cc
- 250 B: 122 – 250cc
- 250 C: 122 – 250cc, no D14 season awards
- Open A: 122 – Open cc
- Open B: 122 – Open cc
- Open C: 122 – Open cc, no D14 season awards
- 25+: 122cc-Open
- 30+: 122cc-Open
- 35+: 122cc-Open
- 40+: 122cc-Open
- 45+: 122cc-Open
- 50+: 122cc-Open
- 14-24 : 122cc-Open
- Non-Current: bike year 2000 and older
- Women Jr.: Age 9-15, 85cc -105cc, big wheel or small wheel
- Women Sr.: Age 12 & Up, 99cc – 250cc (2-stroke or 4-stroke), min. front wheel 19", min. rear wheel 16"
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