One of the first over the counter racers produced in Japan was the TD1 Yamaha released in 1963. In typical Japanese fashion, this YDS engine family had engineering and styling taken from the German Adler 250. Their availability started the ball rolling, and 10 years later the grids were flooded w 250, 350 then 750 Yamaha's worldwide. This corporate thinking helped put proficient and reliable racers in the average man's hands. A lot like Porsche did with the RS and cup cars in a sense if you had the cash.
I love seeing the diversity and quality of machines posted here!
