This pin reacts agains the two springs that center the shift lever.
34503-52 1952-1971
Part of carrier 1972-1984
The Iron Sportster trap door assembly holds the mainshaft, countershaft, and shifter mechanism. The Iron Sportster shifter comes as the 34009-52 assembly.
34503-52
1952-1971
Part of carrier
1972-1984 After 1971, the factory made this pressed-in pin a part of the carrier itself.