With project "YX07" Yamaha departed from the YG frames with the so-called "7-type" frame. This is still produced in bikes like the YB series 40 years later! (1) Final mock-up (l.h. 2) with single rotary valve engine. (3) is a YX07-1 with a 90 cc twin cylinder engine (H1), this idea was cancelled as it was not "commuting". (4) r.h. upper is the first production bike, the H3 of Aug. '66 with sporty fueltank, 86 cc engine with 8 hp @ 7000 rpm and 4-speed gearbox. (5) is the F5 of Dec. '67 with nice long and slim chrome sided tank. There was also a 60 cc version. (6) is the G5 of May '68 as last 80 cc model with a larger chrome area on the tank to distinguish it from the smaller bikes.

Yamaha YX07-2, Jun. '65