Theoretically six identical race prepared Yamaha RD 350 LC motorcycles. I say theoretically because while Yamaha tried to make them all identical some were reputedly better than others.
This is a race in the Yamaha Pro-Am series in the mid 1980s. Yamaha supplied 25 bikes for a mix of professional and amateur riders. Which bike you got was the luck of the draw.
This is my day 6 contribution to Becky’s October Squares challenge on the theme of Kind.