In Australia, motorcycles are categorized into different license classes, such as Learner Approved Motorcycle (LAM), Restricted, and Full License categories. The LAM category is relevant for learners and restricts them to motorcycles with a power-to-weight ratio below a certain limit. However, there is no mandated minimum CC restriction for motorcycles in this category.
It's important to note that motorcycle license requirements and regulations can change over time, so it's always a good idea to consult the local road transport authority or the relevant state/territory government website for the most up-to-date information regarding motorcycle licensing and highway requirements in Australia.