Big Twin Transmission Mainshafts

Harley 4 speed transmission mainshaft

4 speed mainshaft lengths:

1936 to 1964 “kick only, short” 11 3/4″ long

1965 to 1969 “electric start, mid” 12″ long

1970 to 1984 “electric start, long” 12 7/16″ long

Mainshafts are measured end to end.