Youth Bike Classes:
51cc Shaft Drive Limited 0-51cc
Ages 4-8, PW50 Class
See AMA Rulebook for machine specs.
51cc Junior Limited 0-51cc
Ages 4-6
See AMA Rulebook for machine specs.
51cc Senior Limited 0-51cc
Ages 7-8
See AMA Rulebook for machine specs.
51cc Special Limited 0-51cc
Ages 4-8
See AMA Rulebook for machine specs.
50 E Jr.
Ages 4-6
See AMA Rulebook for machine specs.
65cc Junior
59-65cc
Ages 7-9
65cc Senior
59-65cc
Ages 10-11
65cc Open
59-65cc
Ages 7-11
Open to all 65cc machines
85cc Junior
Ages 9-11
2-stroke 79-85cc*
4-stroke 75-150cc *
*Small wheel only
85cc Senior
Ages 12-13
2-stroke 79-85cc*
4-stroke 75-150cc *
*Small wheel only
85cc Senior 2
Ages 14-15
2-stroke 79-85cc
Super Mini
Ages 12-16
2-stroke 79-112cc
4-stroke 75-150cc
Schoolboy 1
Ages 12-17
2-stroke 86-125cc
4-stroke 75-150cc
No “A class, Money/Pro class” racers allowed.
Schoolboy 2
Ages 12-17
2-stroke 122-150cc
4-stroke 126-250cc
No minicycles or superminis
No “A class, Money/Pro class” racers allowed.
Girls Junior
Ages 9-12
2-stroke 59-85cc
Max. Front wheel is 17”, rear wheel is 16”
Girls Senior
Ages 12-16
2-stroke 79-112cc
4-stroke 75-150cc
Max. Front wheel is 19”, rear wheel is 16”
Amateur Bike Classes:
Women
Ages 12+
99cc-250cc
2-stroke
Ages 12+
122-250cc
Must be 14 to ride 250 2-stroke
125 2-stroke
Ages 10+
100-150cc
Must be 12 to ride 125cc
Collegeboy
Ages 14-24
122cc-open
250 A
Ages 16+
122-250cc
250 B
Ages 12+
122-250cc
Must be 14 to ride 250 2-stroke
250 C
Ages 12+
122-250cc
Must be 14 to ride 250 2-stroke
Open A (Pro Bike)
Ages 16+
122cc-open
Open B
Ages 14+
122cc-open
Open C
Ages 14+
122cc-open
Plus 25
Ages 25+
122cc-open
Vet Plus 30
Ages 30+
122cc-open
Vet Plus 30 B/C
Ages 30+
122cc-open
Senior Plus 40
Ages 40+
122cc-open
Senior Plus 45
Ages 45+
122cc-open
Senior Plus 50
Ages 50+
122cc-open
Masters Plus 60
Ages 60+
122cc-Open
Jr. Trail
(Faircross Series Only)
Ages 11 and under
0-110cc
12” rear wheel max.
Air cooled only
Sr. Trail
(Faircross Series Only)
Ages 12-16
0-110cc
14” rear wheel min. (xr80-100-150, ttr125, drz140, klx140, etc.)
Air cooled only
Youth ATV Classes:
ATV 50
Ages 4-8
ATV 70
50-70cc
Ages 6-11
ATV 90
70-90cc 2-stroke, 125cc max. 4-stroke
Ages 8-14
ATV Supermini
Ages 11-15
Machine limits shall be 71-105cc 2-Stroke, 75-150cc 4-Stroke.
ATV Schoolboy
Ages 12-16
0-200c 2 stroke, 0-350cc 4 stroke
No Auto or CVT ATVs, no 250cc 2 strokes (lt250r or trx250r)
Amateur ATV Classes:
ATV A
450cc – Age 16+
250cc – Age 14+
ATV B
450cc – Age 16+
250cc – Age 14+
ATV C
450cc – Age 16+
250cc – Age 14+
ATV Open
450cc – Age 16+
250cc – Age 14+
ATV Vet
Ages 30+
250cc-Open
ATV Masters
Ages 45+
250cc-Open
ATV Women
Ages 14+
250cc-Open
*See production rules for allowable modifications.