Lots of famous makes have skeletons in the closet, models they’d rather you didn’t know they ever made. Like the 50cc moped and 98cc scooters that MV Agusta produced back in the 1950s, or Moto Guzzi’s three-wheeled delivery truck. So how about the last-ever Ducati single-cylinder off-road bike, of which 3,846 examples were built from 1975 to 1979, which was also incidentally the first Ducati motorcycle to be built with a left-foot gearchange? It wasn’t just the fact that the 125 Regolarità and its later Six Days variant represented the Bologna factory’s only serious attempt to target the off-road market, but it was that contradiction in terms – a Ducati two-stroke!

 In 1977, the Six Days model was introduced with its class-leading top speed of 74 mph. “The Six Days was a much more competitive mount,” says Italo Forni. “It was actually better as a motocrosser, once we started removing weight, and those were the races I won on the bike before they closed everything down.”