Ducati Monster S4 (2001-2007) The Ducati Monster (called Il Mostro in Italian) is a standard, or naked bike, motorcycle designed by Miguel Angel Galluzzi and produced by Ducati in Bologna, Italy, since 1993. In 2005, Monster sales accounted for over half of Ducati’s worldwide sales. Like most modern Ducati motorcycles, it has a 90° V-twin engine, ...