Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A race replica motorcycle is a publicly available retail vehicle that resembles a competition race bike either in performance or appearance. The classification is imprecise and varies from bikes derived directly from a racing prototype (such as the Ducati Desmosedici) to production bikes that are considered heavily influenced by a manufacturer''s racing experience (such as the Aprilia RS125 or Kawasaki ZX-7R). It does not extend to retail bikes competing in race series that require an existing production bike be used (such as the Honda CBR1000RR).