* denotes 2008 Change
* [250A]
122-250cc 2 or 4-stroke
(Cash Class)
* [250B]
122-250cc 2 or 4-stroke
(Award
Class)
* [250C] 122-250cc 2 or 4-stroke (Award Class)
* [Open A]
122-Opencc 2 or 4-stroke
(Cash Class)
* [Open B]
122-Opencc 2 or 4-stroke
(Award
Class)
* [Open C]
122-Opencc 2 or 4-stroke
(Award
Class)
[+25A]
86cc-Open (Cash Class)
Ages 25 & up
[+30A]
86cc-Open (Cash Class)
Ages 30 & up
[+30B/C]
86cc-Open (Award Class)
Ages 30 & up, B and C class riders
[+40A]
86cc-Open (Cash Class)
Ages 40 & up
* [14-24 A/B/C]
122-Open cc 2 or 4-stroke (Award
Class) A, B & C class riders
[Women]
Female (9yrs-Up)
(Award Class)
[Non-Current]
Bike must be 5 years old at beginning of year
(Award Class)
[Open] 251-500cc
2-stroke or 390-650cc 4-stroke (Award Class)
Youth Classes **Age is as of January 1st** Wheelbase limits as per AMA Rules
* [Schoolboy]
122-125cc
2 or 4-stroke (min 53" wheelbase) (Award Class) 12-15 years old
[85 Senior]
66-85cc
2-stroke or 75-125cc 4-stroke (Award Class)
12-15 years old
[85 Junior]
66-85cc
2-stroke or 75-125cc 4-stroke (Award Class) 9-11 years old
* [85 Open] 79-112cc 2-stroke or 75-150cc 4-stroke, includes Big wheel 85’s Super mini's and 100’s (Award Class) 7-15 years old
[65 Senior]
52-65cc
2-stroke or 52-90cc 4-stroke (Award Class)
10-11 years old
[65 Junior]
52-65cc
2-stroke or 52-90cc 4-stroke (Award Class) 7-9 years old
[65 Open]
52-65cc 2-stroke or 52-90cc 4-stroke(Award Class) 7-11 years old
[50 Open]
0-51cc
(Award Class) 4-8 years old
[50 Senior]
0-51cc
(Award Class)
7-8
years old
[50 Junior]
0-51cc
(Award Class) 4-6 years
old
[50 Shaft]
0-51cc
Shaft-Beginners Only (Award Class) 4-6 years old