This spring fits in the hollow bolt that holds a plunger that presses on the edge of the shifter plate aka cow paddy.
|The Iron Sportster trap door assembly holds the mainshaft, countershaft, and shifter mechanism.
The Sportster shifter cam follower assembly. The 34065-52 cam holder is on the far right. the part numbers from left to right: 34062-52, 34068-52A, 34067-52, 34065-52.