Vintage Classes - Hare Scrambles
Includes machines originally sold as of 1974 and older (and like design) models
*Indicates expert-level classes eligible for AMA Off-Road Vintage Grand Championship points
**Indicates expert-level classes eligible for AMA Senior Off-Road Vintage Grand National Championship points
Evolution Classes - Hare Scrambles
Includes machines originally sold as 1976 and older (and like design) models
Evolution 1 Classes - Hare Scrambles
Includes machines originally sold as pre-1979 (and like design) models
Evolution 2 Classes - Hare Scrambles
Includes bikes with no linkage type rear suspension, no water cooling and no disc brakes. There are no travel limitations
Evolution 3 Classes - Hare Scrambles
Includes bikes which may have been produced with water cooling and have linkage type rear suspension, but cannot have disc brakes or any power valve type mechanism built directly into the engine. Yamaha's YZ 82-84 are the only eligible motorcycles allowed to use a power valve mechanism.
Revolution 1 and Classic Revolution Classes - Hare Scrambles
Revolution 1 includes motorcycles originally sold as 1998 and older (no like design) models. Classic Revolution includes motorcycles originally sold as 1990 and older (no like design) models.
Revolution 2 Classes - Hare Scrambles
Revolution 2 classes include motorcycles originally sold as 2008 and older (no like design) models -
2-Stroke machines only
Youth Classes - Hare Scrambles
Reference class descriptions above