The Superbike racing is a category of motorcycle road racing that employs modified production motorcycles. 
Superbike racing motorcycles must have four stroke engines of between 800cc and 1200cc for twins, and between 750cc and 1000cc for four cylinder machines. The motorcycles must maintain the same profile as their roadgoing counterparts. The overall appearance, seen from the front, rear and sides, must correspond to that of the bike homologated for use on public roads.
Superbike racing motorcycles must have four stroke engines of between 800cc and 1200cc for twins, and between 750cc and 1000cc for four cylinder machines. The motorcycles must maintain the same profile as their roadgoing counterparts. The overall appearance, seen from the front, rear and sides, must correspond to that of the bike homologated for use on public roads.