A sprue breakdown of the parts of the classic kawasaki z900 aka the kawasaki 900 super four z1 900 z1 or 900 s4 originally produced from 1972 to 1975 this classic muscle ride was eventually beaten out of the market by the honda cb750 this is not an official product and is not in any way endorsedkids t shirt design reads super fourwe lovingly print all of our kids t shirts onto 100 cotton soft style loose fitting unisex t shirts for boys and girls