YAMAHAYR-3 1969 - 1972

　　This final model launched in 1969 was a very different machine from the YR1 of just two years earlier. The engine still produced 36bhp, so was still very fast, but now with much less vibration, and a more usable power band making it easier to ride. Styling was updated, and the chassis although similar to earlier models, now handled very much better, especially two up