Rotary-Valve Rocket: 1969 Kawasaki 350 Avenger A7SS

Before offroad bikes arrived, scramblers like this Kawasaki 350 Avenger were the best game in town.

Avenger A7SS
The Avenger A7SS manages to look compact and husky at the same time. It was also a real performer: The mechanically identical street version could run the quarter mile in 14.35 seconds.
Photo by Bill Masho