This shifter mechanism basically works like a Ratchet Top of Big-Twin models: after each shifting operation all involved levers return to their home position and are ready for the next gear change. Thus it is possible to convert your trusty 45 cui. hand shifter Flathead to foot shift or to a Jockey shifter. ...

Fully assembled, ready-to-install, 4-speed (!) transmissions for 1941-up 45 cui./750 cc Sidevalve Harleys. ...