Specifications: 583 cc SOHC Desmo V-twin, five speeds.

By the early 1990s, Ducati was completely involved in building sport bikes, so the launch of the M900 Monster at the Cologne show in October 1992 was quite a surprise. Yet its pedigree was unimpeachable; it was the first “naked” bike or “street fighter,” as they are now known. The frame was adapted from the 851/888 design, with an upright seating position and no fairing. It was an immediate success, and a 600-cc version was launched in 1994 in red or yellow. Testers managed a top speed of 109 mph, with a quarter-mile in 13.6 seconds at 97 mph. This iconic design has evolved in the past 17 years, but its basic simplicity is much admired. This is a solid example of an early 600-cc Monster, few of which come to market, as owners tend to keep them and just buy a bigger one. This bike has custom paint, a fly screen and carbon-fibre mudguards.