1976–79 Benelli 250 Quattro
Benelli's littlest Quattro was the first production 250cc four. It was interesting technically, but not a stellar ride. It was as weak off idle as you'd expect, but it didn't rev out as willingly as its Grand Prix lineage would have suggested. It was the most expensive and least powerful multi-cylinder 250 available while it was in production. To increase performance, the original 231cc displacement was increased to 300, then 350, then 400cc, but it never performed as well as others in whatever displacement class it was it. Eventually Japan produced its own, better 250 fours. By then, the little Benelli had already lost its novelty.