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 endorsedt shirt design reads super fourour crew neck short sleeved mens t shirts are 100 premium cotton in a soft pre shrunk jersey knit our womens t shirts are lighter weight 150g tees made with d