Description Description GT1 (1973), GTMX (1973-1974), GT80A (1974-1976), GT80MXA (1974-1977), YZ80 (1974-1976), YZ100 (1976), DT100 (1974-1976), MX100 (1974-1975), AT1 Series (1968-1970), AT2 Series (1972), AT3 (1973), ATMX (1973), DT125 (1974-1976) , MX125 (1974-1976), YZ125 (1