Supermono is a class in European
motorcycle road racing. Supermono class machines have a
single-cylinder engine
A single-cylinder engine, sometimes called a thumper, is a piston engine with one cylinder. This engine is often used for motorcycles, motor scooters, go-karts, all-terrain vehicles, radio-controlled vehicles, portable tools and garden machinery ...
with a maximum displacement of 800 cc.
The British Supermono series allows "unlimited" engine size, but this involves keeping under the
ACU accepted size of 1300cc.
In contrast to F450 (or
Super Single) machines, Supermono machines use most of the donor bike (usually small and agile race bikes) and swap out the engine for that of a modern 450cc dirt bike.
See also
*
Gavin Trippe#Formula 450 series
References
Motorcycle racing
{{motorcycle-racing-stub