Four-Valve Founding Father: 1991 Ducati 851 for Sale
Introduced in 1987, the 851 was a huge leap forward for Ducati, adding four-valve heads, liquid-cooling, and fuel-injection to their 90° v-twin. The resulting engine was good for a claimed 93hp at the rear wheel and was dubbed the “Desmoquattro” for obvious reasons. The new bike allowed Ducati to again be competitive in racing, and…
