"The 1992 Diamond Back Tailwhip features a three tube chromoly streetstyle frame, removable bash guard, "ACS" pro rotor, Knee saver handle bar, DIA compe "Bulldog" freestyle brakes and levers with built in peg mounts on frame & fork and 48 spoke alloy rims. The 1992 Diamond Back Tailwhip Mag features Dupont Zytel mag wheels in black.
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Made in Taiwan.
Fourth Letter in the serial indicates year of production (1991 or 1992). X in the serial indicates production Month (E to L - May to Dec). Y in the serial indicates production Month (A to D - 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.