CLASSES

Note: All classes are further divided into Novice, Intermediate and Expert rider ability levels. 

• Premier Lightweight: Certain pre-1965-era machines up to 250cc.
• Premier 500 Pre-1965-era machines up to 500cc
• Premier Open Twins Pre-1965 twin-cylinder machines 600cc and larger.
• Classic 125 125cc two-strokes and four-strokes up to 150cc, manufactured through December 1971 and any like machines.
• Classic 250 Specific 250cc and smaller two-stroke machines introduced just after the Premier Lightweight era (i.e., four-speed Spanish motorcycles, twin-pipe CZ), as well as the heavy 350cc non-unit motorcycles, such as Matchless and BSA.
• Classic 500Specific motorcycles from the late 1960s and early '70s.
• Sportsman 125, 250 and 500 classes for machines up to model year 1974.
• Sportsman Open Twins: Twin-cylinder machines up to model year 1974.
• Open Age: Any AHRMA-eligible rider on an AHRMA-eligible vintage machine.
• +40: Riders over 40 years of age on any AHRMA-eligible vintage machine.
• +50: Riders over 50 years of age on any AHRMA-eligible vintage machine.
• +60: Riders over 60 years of age on any AHRMA-eligible vintage machine.
• +70: Riders over 70 years of age on any AHRMA-eligible vintage machine.
• Women: Riding any AHRMA-eligible vintage machine.

AHRMA rules also are offered for 1975 and newer Post-Vintage Motocross.

AHRMA 2008 Legends of MX
National Vintage Motocross Series