Kitty Cat Stock (Amateur stock, Stock, and Improved)

ENGINE

Maximum cylinder overbore for wear or cylinder repair cannot exceed .020 inch or .5mm

CHASSIS

No ballast (weight) of any kind may be added (THIS INCLUDES F3)

120 Stock (Amateur Stock, Stock, Super Stock, Improved, Lemans)

Engine

Maximum cylinder overbore for wear or cylinder repair cannot exceed .020 inch or .5mm

Chassis

No ballast (weight) of any kind may be added (THIS INCLUDES SPRINTER, SEMI-PRO 206, AND PRO 206)