Weather is changing, and temperatures are dropping. If you're getting ready to store a motorcycle in a shed or garage that isn't heated, but sure to check your anti-freeze, or drain the water out if it's a race only application. You can also check the ethylene glycol or propylene glycol amounts with an anti-freeze tester available at most auto parts stores.
If Engine Ice is in the engine you should be fine. It protects to -27°F
Here are a couple of pictures of the mess a pushed out freeze plug will make in your engine.