A: EVOLUTION means model year 1975 to 1980 (or like design) & older bikes exceeding the suspension limits. No Disc Brakes or Water Cooled Engines.
Classes
Championship Class Definitions
1974 and earlier with no more than 7 inches of travel in the front and 4 in the rear.
Note: Modified frames and after market swingarms are OK provided they meet the maximum travel requirements. 1974 like design machines are eligible (i.e. 1975 CR125, KX125, TM125, YZ125)
1975 and later machines, originally built with air cooled engines, drum brakes and no linkage suspension. Note: Yamaha monoshock models are eligible up to 1981.
Any displacement Vintage machine, as described above is eligible.
Note: 50+ age riders can enter 40+ class.
Any displacement Evolution machine, as described above is eligible.
Note: 50+ riders can enter the 40+ class.
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VINTAGE Classes |
EVOLUTION Classes |
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Bikes:1982-1984
VMX-GP 125
VMX-GP 250
VMX-GP 500
Bikes:1984-1989 disc brakes
VMX-GP 125
VMX-GP 250
VMX-GP 500
VMX-GP Four stroke 9
VMX-GP Four stroke 12
Up to 9 and 12 inches up front
Standard Skill Levels - Expert, Intermediate, Amateur (also called Novice )
Numbers- All machines must have the same numbers on all three number plates. Number must be at least 6 inches tall and contrasting to the number plate background
Classes are subject to changes:
