Supermono
Supermono is a class in European motorcycle road racing. Supermono class machines have a single-cylinder engine with a maximum displacement of 800 cc.[2] The British Supermono series allows "unlimited" engine size, but this involves keeping under the ACU accepted size of 1300cc.
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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
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