The 1997 Mongoose racer X has a junior sized high tensile frame in chrome, or gloss black black with a 1 inch hi ten fork, Mongoose alloy 4 bolt stem, Mongoose handlebar, Mongoose grips. Mongoose MX 1000 alloy side pull brake and sure stop coaster brake on the rear with Mongoose lever. Mongoose 36 hole chromed rims and Mongoose gumwall tyres, Mongoose 1-piece crank with a 43 tooth sprocket, Mongoose composite pedals, Mongoose padded racing seat.
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Made in Taiwan.
Fourth Letter in the serial indicates year of production. F=1996 or G=1997. X in the example above indicates production Month (E to L - May to Dec). Y in the example above 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.