Small capacity

Small capacity sport bikes are typically of engine sizes ranging from 125 cc (7.6 cu in) to 400 cc (24.4 cu in), but are also produced in as little as 50 cc (3.1 cu in) (sometimes designed/tuned for persons carrying a restricted/learner's license). Small capacity sport bikes are available in both 2-stroke and 4-stroke cycles. Not as commonly produced now are 2-stroke sports bikes, largely restricted in production due to tight emission laws and agreements. Generally small in size, they can suit the shorter rider and the usual light weight means that although they output less power than larger sports bikes. Short wheelbase and lack of weight means handling characteristics are often on par with that of the typical high-capacity sport bike.
Examples include the Aprilia RS250 and Honda CBR125.