​2020 LUCKY THUMB DIRT TRACK CLASSES 
​
             0-51CC JUNIOR – PEE WEE SHAFT DRIVE / MULTI-SPEED 4-8 YR OLD       
             0-51CC SENIOR - CHAIN  4-8 YEAR OLD
52-65CC  6-11 YEAR OLD
            66-85CC 7-15 YEAR OLD
            86-250CC OPEN
            251CC + OPEN SINGLE
            251-505CC   AMATEUR
            251CC +  OPEN TWIN
            VETERAN 35+YEARS OLD
            SENIOR 60+YEARS OLD
            VINTAGE 0-400CC (AIR COOLED 1988 AND OLDER)
            VINTAGE 401CC + OPEN  (1988 AND OLDER)
            WILDCAT CLASS   80-200cc AIR COOLED 4-STROKE 12YRS OLD AND OVER
            MOTORCYCLE COMBO CLASS    15 YEARS OLD AND OVER
            QUAD OPEN COMBO CLASS 
 
THIS IS NOT RACE ORDER
ALL AMA AND D14 RULES APPLY