The Benelli 650S, known as the Tornado, is a fine, strong Italian twin, and much fun to ride. There was also a sporty S2 version, with hump seat and plexiglass handlebar fairing. Motociclismo published a photo in May 1973 of an S2 with this striking paintjob, though I've never seen one like it in the flesh - maybe it was a promotional one-off. We'll be including a test of a 650S in a future issue of the mag.
