2023 Season Race Classes
The classes listed below are also listed in the AMA Rulebook. Please refer to the AMA Rulebook for detailed information regarding eligibilty for your motorcycle and your rider.
YOUTH
All MSC Events
- Limited PeeWee 4-6 0-50cc Two Stroke
- Limited PeeWee 7-8 0-50cc Two Stroke
- Limited PeeWee 4-8 Oil Inj 0-50cc Two Stroke
- Limited PeeWee 4-8 Open 0-50cc Two Stroke
- 65 7-9 59-65cc Two Stroke
- 65 7-11 59-65cc Two Stroke
- Junior Mini 9-11 65/85cc Two Stroke
- Mid Mini 9-13 85cc Two Stroke
- Senior Mini 12-15 85cc Two Stroke /150cc Four Stroke *
- Supermini 12-16 79-112cc Two Stroke /150cc Four Stroke **
* 14″ rear and 17″ front wheel.
** 17″ rear and 19″ front wheel.
ADVANCEMENT
All MSC Events
- 250 Expert
- 250 Amateur
- 250 Novice
- Open Expert
- Open Amateur
- Open Novice
- Plus 25 Expert
- Plus 25 Amateur
- Plus 25 Novice
- Plus 30 Expert
- Plus 30 Amateur
- Plus 30 Novice
- Plus 40 Expert
- Plus 40 Amateur
- Plus 40 Novice
NON-ADVANCEMENT
All MSC Events
- 125 Two Stroke Only
- Collegeboy 17-24
- Plus 35
- Plus 50
- Plus 60
- Schoolboy 12-16
- Women 12+
VINTAGE
At all Diamondback MX and Double Points and select ACE MX @THE WICK 338, ECHO VALLEY, OCFMX, and Walden MX Events Only
- 2000’s Y2K – 2009 Bikes and older – ALL RACES ALL TRACKS
- Vintatge 90’s – 1999 Bikes and older – All DBMX and Double Points events at all other tracks.
- Vintage 80’s – 1989 Bikes and older – All DBMX and Double Points events at all other tracks.
- Vintage 70’s – 1979 Bike and older – All DBMX and Double Points events at all other tracks.
