AMA competition bulletin:
amateur motocross class rules changes
To: AMA Off-Road Congress delegates, AMA promoters
Please be advised that the AMA Board of Directors ratified a new amateur motocross class structure for the 2008
racing season at its May 2007 meeting.
Nationally recognized amateur motocross classes for 2008 will include:
MX Lites (100cc-153cc 2-stroke/151cc-250cc 4-stroke);
125 Class (86cc-125cc 2-stroke only)
Motocross (154cc-285cc 2-stroke/251cc-450cc 4-stroke);
250 Class (126cc-250cc 2-stroke only);
Open (251cc-500cc 2-stroke/390cc-650cc 4-stroke).
Displacements may be OEM or achieved by aftermarket modification.
The amateur motocross class structure for 2008 also includes Plus 25, Veteran 30 and Veteran 40 for riders at
least 25, 30 or 40 years old, respectively, riding two- or four-stroke motorcycles with displacements of
86cc-open; and a Women's class for women riding two- or four-stroke motorcycles with displacements of
The AMA amateur motocross classes for 2008 will also recognize a Pit Bike class. The specifications for the Pit
Bike class are still being finalized and will be submitted for AMA Congress approval at the October meeting.
The 2008 structure for AMA Youth Classes will be the same as in 2007.
The new class structure is the result of a directive the AMA Board of Directors issued to AMA staff late last year
to consult with technical experts in the field and recommend a measured approach to leveling the playing field
between two- and four-stroke motorcycles in amateur motocross.
Also at the May meeting, the AMA Board of Directors ratified three rules that passed AMA Congress in 2006 for
the 2007 season but were not ratified at the November 2006 Board meeting.
These additional changes to Amateur, Semi-professional & Youth Competition Rule Book take effect immediately:
Add sentence (chapter 4, section B, paragraph 3, page 14): "In addition, in Dirt Track, TT, Scrambles and Ice
Race, riders changing machines must start on the penalty line on their next race."
Last sentence to read (chapter 4, section B, paragraph 7 I, page 15): "and riders will be started in a procedure
consistent with Pro Racing restarts."
Change (chapter 5, section C, paragraph 1, page 44): "Class 6 Change age to 7-11. Delete Maximum (adjusted
length) wheelbase 45 inches. Move brackets between 85cc classes and hillclimb classes 13 & 14. Place the wheel
sizes below to be included with classes 13 & 14: Front Wheel Max 17 inches, Rear wheel min 12 inches, Rear
Wheel Max. 16 inches. Delete Wheelbase 51 inches or less for Hillclimb."
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