THE XL70'S HAD DIFFERENT TRANNYS SO IT WON'T WORK ON THEM,, AND HONDA UPDATED SOME OF THE SL70'S UNDER WARRANTY, SO BEWARE ON THE SL70'S FITS: Honda CL70 1969 Honda CL70K1 1970 Honda CL70K2 1971 Honda CL70K3 1972 Honda CT70H 1971 Honda CT70HK1 1972 Honda SL70 1971 Honda SL70K1 1973 63A