#2 in picture. May fit other models. Special Order Item. This is the updated version with 23 teeth on the gear circled in RED. If you have the older version with 27 teeth you will need to update the Main Shaft, Counter Shaft and Drum. 101038-0538 Gearshift Drum Comp, 101038-0536 Main Shaft Transmission, 101038-0537 Main Shaft.