Yep, Illegal, In NSW there is no such thing as rec rego, so you can't even try to register your bike, ride on private property or face the fines if and when the cops catch up with you, last time i checked they were, unregistered $600+, uninsured $600+ and if you don't have your motorbike license you can get stung for that too, if you do have it, i beleive you lose points, I rode around in a mining town for years, the cops up there would do blitzes on dirt bike riders once or twice a year, no hassles whatsever untill they are doing one then everyone that can't get away gets fined.