Plug for Flywheel through 2022

Black rubber plug for 2022 and older engines. Located on right side where you watch the flywheel to find the timing mark used for checking valve clearances. (Unless you have a Ural 650, in which case it's located elsewhere, but this still fits.)

You probably lost this while riding. Or maybe while adjusting valves! Either way, they tend to go missing. This looks nicer than a bottle stopper.

If you're fancy, poke a tiny hole in this and thread a knotted piece of rope through it, then tie the rope off somewhere nearby. We saw that on a customer's bike once and thought it was clever -- forgot to take a picture, though.