No, not a JR80, but a K10P - and it is an 80cc Suzuki. This marvel of 1966 technology came with full street equipment and two sprockets mounted at the rear. Two master links in the chain allowed you to swap from street to trail gearing. It had a top speed of ~55mph on the 33 tooth street sprocket and 35mph with the 57 tooth trail one. It was the first bike I owned and I pestered my parents until they let me spend the $145 for it in 1971. It eventually sacrificed its engine to power a go-kart.