The 1991 Mongoose Expert Mini is an all new, scaled down version of the legendary Expert Comp, designed exclusively for 7- to 10-year old racers and dirt thrashers. Like its larger brother, the Expert Mini features only the finest mini racing componentry: 20 x 1-3/8-inch Sun alloy rims, short-reach 630 alloy calipers, Mongoose composite pedals, a Kraton stem, 165mm chromoly cranks, and a junior Velo saddle.
Top Tube Size
Made in Taiwan.
Third digit in the serial indicates year of production. A = 1991. The fourth digit in the example above indicates production Month. Y = A to D - Jan to April. For all serial number sequence explanations, see the mid-school serial guide page.
Mid School Serial Guide
Bikes made in Taiwan usually had an 6-9 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.