Vyrus is a small, exclusivist Italian motorcycle manufacturer based in Coriano, Italy.

The "Tesi", meaning Thesis in Italian, had its origins as a university engineering project linked to Massimo Tamburini.

Vyrus split from the Bimota and completed the first evolution of the Tesi's development, marketing the bike under their own name.

[1] In 2011 Vyrus showed interest in the new Moto2 category by designing a new bike around the series-spec Honda CBR600RR engine used in the class.

[3] Three versions were offered – a race-ready model with top spec components for a little under US$90,000, a street legal variant for around US$40,000 and a kit without engine around US$27,000.