2ND GEAR COUNTER 31/TOOTH (3_SPEED_AUTO) (Z50A_1968_TO_1978) (Z50R_1979_TO_1999) (ATC70_1978_TO_1981)
(CT70_1968_TO_1994) (CT70K0_TO_1994)  (C70_1980_TO_1983)  23441-086-010 (309L) 
 
THIS GEAR IS THE SECOND GEAR ON THE COUNTER SHAFT. HONDA SAYS IT FITS ALL CT70 AUTO'S FROM K1 TO 82. I THINK IT WILL WORK ON THE KO BUT I NEED TO CONFIRM THIS. HELP FROM ANYONE THAT KNOWS WILL BE APPRECIATED.