The 1990 Mongoose Supergoose is a high performance racing bicycle with many of the features of professional bicycles. It's handcrafted of premium Chromoly tubing with the Mongoose wishbone style frame. Main features include: Quick change alloy spyder. Mongoose narrow lightweight racing stem, competition 20x1.95 tires. patented Pro Class alloy rims, and a full pad set.
Top Tube Size
Made in Taiwan.
The first two numbers in the serial indicates year of production. 89 = 1989, 90 = 1990. The third and fourth numbers (as shown in the examples above) indicate production Month. XX = 05 to 12 May to Dec. YY = 01 to 04 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.
HT˚ = Head Tube Angle, ST˚ = Seat Tube Angle, ST = Seat Tube Length to top, CS = Chain Stay Length, BB = Bottom Bracket Height, WB = Wheel Base Length, FR = Fork Rake. All dimensions center-to-center unless otherwise noted. Dimensions provided in millimeters.