Z1300 was announced in the Germany cairn show in 1978. Z1300 was water-cooled DOHC2 valve 1286cc while CBX was air cooling 1047cc, and it took pride in the maximum displacement in the vehicle of the domestic production manufacturer at that time though it was a car equipped with six series cylinder engine as well as HONDA and CBX1000 that had been announced to a simultaneous period. Because the Zarah color is strong, the drive system adopts the shaft drive. The reason for this displacement is that it considered it so as not to exceed the displacement of Harley Davidson at that time. The announcement of Z1300 of 120 PS is received, and there is an anecdote that 100-horsepower restriction of the motorcycle is announced in Germany.