The 1986 Diamond Back Turbo Lite Kit. There is no muscling around extra weight when you can whip the Turbo Lite. Designed for the serious rider under 100 pounds an ultra light frame set for the competitor who recognizes quality: Light, serious and specialized! Special alloy turbo smoke finish.
F5X000000 F6Y000000
Made in Taiwan.
F stands for Fairly factory. Second digit indicates year of production (1985 or 1986). X in the serial indicates production Month (5 to 12 - May to Dec). Y in the serial indicates production Month (1 to 4 - Jan to April).
Bikes made in Taiwan usually had an 8 month production and shipping timeline before they were sold in bike shops around the world. In May of any year, factories would usually switch production to making models for the following year.