Division Category A1:F1
United Kingdom
Category A1 motorcycle without sidecar, with a power rating not exceeding 11 kW and with a power to weight ratio not exceeding 0,1 kW/kg, and capable of a speed of at least 90 km/h.
If the motorcycle is powered by an internal combustion engine, the cylinder capacity of the engine shall be at least 120 cm 3 .
If the motorcycle is powered by an electric motor, the power to weight ratio of the vehicle shall be at least 0,08 kW/kg;