Snap Ring for drive sprockets used with the Max Torque go kart clutch. These snap rings are ideal for securely mounting drive sprockets to the main clutch assembly. Having these in your track spare kit is great in case you need to change sprockets at the track.
In the parts diagram, this part is denoted as part #15. This snap ring securely holds the drive sprocket in place while the clutch is in operation, and is necessary to keep all components properly within tolerance.
Note that this component is not necessary for belt-type clutch drive sprockets, as these belt drive systems utilize a braized on belt drive sprocket.