An automatic rewinding two-speed fishing reel that utilizes a transmission which includes a post assembly mounted on a driver that is rotatable on a shaft that connects to a recess arrangement formed in a low gear that is also rotatable on the shaft. The post assembly is engaged with the recess arrangement when in the low speed mode and is displaced from the recess arrangement when in the high speed mode. Connecting wall surfaces between the post assembly and the recess arrangement form an angle other than ninety degrees and preferably between ten and sixty degrees relative to the longitudinal center axis of the shaft.