COMPETITION BULLETIN
SUBJECT: 2007 Supermoto Rules Changes
The following rule changes were created utilizing input from the AMA rules submission web site, AMA Pro Racing staff and
the AMA Supermoto Technical Rules Committee. The changes have been approved by the AMA Board of Directors and will
go in to effect January 1, 2007.
1. Engine displacements for the Supermoto class will be 350cc - 450cc 4-stroke single or twin cylinder
2. Minimum weight limit for the Supermoto class will be:
Single cylinder – 230 pounds without fuel.
Twin cylinder – 250 pounds without fuel.
3. Minimum weight limit for the Supermoto Lites class will be 220 pounds without fuel.
4. All motorcycles must have protective sliders in the following areas: Footrest, outside bottom edge. Hand guards, bar end. Rear axle.
All protective sliders must be securely mounted and constructed of a non-sparking material. The Chief Technical Inspector
will make the final determination if a protective slider meets the requirements.
5. Hand guards shall be installed and must extend beyond the lever and attach to the bar end. All hand guards must
have a protective slider on the outside edge.
6. Maximum diameter for front and rear wheels is 17".
7. Tires permitted in all classes of the AMA Supermoto Championship series must meet the following criteria:
1. Approved by the manufacture for racing use and accepted as eligible
2. Motocross, enduro or trial tires are prohibited
3. The maximum tread depth of the front or rear tire is 10mm
4. Grooving or cutting of the tread pattern is permitted
8. Automatic lap timing devices will be permitted. Transmitter beacons must be in an approved area. Receivers shall
not be mounted on the front area of the front number plate.
9. In the Supermoto Lites Class, Forks and Shocks shall have the following restrictions:
a. Forks and shocks must be the stock units from the originally homologated model.
b. Originally homologated inner and outer fork tubes, axle lugs, cartridge, and piston rods must be retained, but may
be modified. All other fork parts may be replaced.
c. Modifying the finish of the originally homologated inner fork tubes is prohibited.
d. Originally homologated shock body, shaft, and reservoir must be retained but may be modified. All other shock
parts may be replaced.
e. Modifying the finish of the originally homologated shock shaft is prohibited.
Should you have any questions concerning this information, please contact AMA Racing Director of Technical Development,
