There are many different categories of Road Racing, from vintage historic (pre 1990) bikes, 125GP solo bikes and sidecar machines right through to the exclusive Grand Prix machines and high-powered Superbikes.
Supplementary Regulations for all Race Meetings can be found HERE
Australian F1 and F2 Sidecar Championship Facebook
Information regarding Fuel Homologation
Information regarding Ninja 400 ECU Reprogramming