 | 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. |
