Rotary-Valve Rocket: 1969 Kawasaki 350 Avenger A7SS

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

Close up of Kawasaki Engine
Rotary-valve design makes for a wide engine due to the placement of the carbs under covers on either side of the crankshaft.
Photo by Bill Masho