There are varying laws in each state of Austalia on derestricting
The speed limiting is done by Fonz during manufacturing and the vehicle will be registered as a moped.
Later if you want to get your licence you can derestrict your vehicle (excl. Arthur 1) with the assistance of a local compliance engineer.
By Australian standards, Fonz mopeds are all Fonz models speed limited to 50km/h
By Australian standards, Fonz motorcycles are all Fonz models speed limited to 50km/h