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2020 Bike Classes

Bike ClassAge
(as of Jan 1st)
2 Stroke4 StrokeNotes
50cc (4-6 yrs)4-60-51cc0-51ccAll PW classes are stock
50cc (7-8 yrs)7-80-51cc0 -51cc 
50cc Oil/Auto (4-8 yrs)4-80-51cc0-51cc- Single-speed automatic, oil-injected.
50cc Open (4-8 yrs)4-80-51cc0-51cc- No oil injected
- Mini-E bikes allowed
65cc (7-11 yrs)7-1152-65cc52-109cc- Air cooled 4-strokes 
- Must have 14" front wheel and 12" rear wheel
65/85cc (9-13 yrs)9-1352-85cc75-149cc- Air cooled 4-strokes
- Max 17" front wheel and max 14" rear wheel
85cc (9-11 yrs)9-1179-85cc75-149cc- Air cooled 4-strokes
- Max 17" front wheel and max 14" rear wheel
85/150cc (12-15 yrs)12-1579-85cc75-149cc- Max 17" front wheel and max 14" rear wheel
Super Mini (12-16 yrs)12-1679-112cc75-149cc- Max 19" front wheel and max 16" rear wheel
Schoolboy*12-1686-125cc126-250cc 
Collegeboy*16-24122-Open cc122-Open ccAge 24 by riders first seasonal race - Rider may enter class at 24yrs and complete season championship after 25thbirthday
125cc 2-Stroke12+ Up122-125cc0 
250cc (A-B-C)*12+ Up122-250cc122-250cc 
Open (A-B-C)*12+ Up122-Open cc122-Open ccMust be 14 yrs old to ride 251cc-Opencc
25+ (A-B-C)25+ Up122-Open cc122-Open cc 
30+ (A-B-C)30+ Up122-Open cc122-Open cc 
40+ (A-B-C)40+ Up122-Open cc122-Open cc 
45+45+ Up122-Open cc122-Open cc 
50+50+ Up122-Open cc122-Open cc 
60+60+ Up122-Open cc122-Open cc 
Women's (85cc+)*12+ Up84-Open cc99-Open cc

 *The AMA announced a rule change for the 2017 season that will introduce new minimum ages for certain displacement motorcycles. The following rule change was created through AMA Congress and approved by the AMA Board of Directors. This rule will go into effect Jan. 1, 2017.

Chapter 1.1; Chapter A; Paragraph 6: The minimum age for amateur riders is 12. In all events, a rider must be 14 or older to ride motorcycles above a 250cc.In motocross events, a rider must be 14 or older to ride a 250cc 4-stroke/2-stroke motorcycle. In motocross events, a rider must be 16 or older to ride a 450cc or above motorcycle.

Example: A racer who is 13 years old on the day of the event is not permitted to compete on 250cc model motorcycle. A racer that is 15 years old on the day of the event is not permitted to compete on a 450cc model motorcycle.

2020 Quad Classes

Quad ClassAge
(as of Jan 1st)
2 Stroke4 StrokeNotes
50cc Open4-80-50cc0-50cc
70cc Open6-1151-70cc51-70cc
90cc Open8-1551-90cc51-125cc
Schoolboy13-1571-200cc91-300ccProduction
Collegeboy15-2491-Opencc  
Open A16+Up91-Opencc91-Opencc 
Open B15+Up91-Opencc91-Opencc 
Open C15+Up91-Opencc91-Opencc 
Plus 2525+Up91-Opencc91-Opencc 
Womens/Girls OpenAny ageOpen ccOpen ccMust be 15+ to ride full size quad