The duration that a motorcycle can be in storage before it needs to be registered again depends on the specific regulations of the jurisdiction in which the motorcycle is registered. Registration requirements can vary between countries, states, and even local municipalities, so it's important to check the laws and regulations applicable to your specific location.
In some jurisdictions, motorcycles may need to be registered annually, and if the registration is not renewed within a certain timeframe, it may be considered expired. In such cases, you would need to renew the registration before using the motorcycle on public roads again.
For example, you might be able to place the motorcycle in "storage" status, which typically requires a reduced fee, and it will not be allowed to be used on public roads during that time. This can be useful if you plan to keep the motorcycle unused for an extended period.
To get accurate and up-to-date information about registration requirements and storage options for motorcycles in your specific jurisdiction, it's best to consult the local department of motor vehicles or the equivalent government agency responsible for vehicle registration and licensing.