Air-Uni U-2. Made by Uni Bmx in 1987, It's extremely rare. It was produced for a brief period in 1987 and was dropped to produce the bicycle we know as the Ozone. The Air-Uni Ozone was introduced at or about the same time as the U-2 and was similar. After U-2 was cut, the Ozone image was changed to resemble the more street riding fashion that was growing at the time.