1999 GT Speed Series Team Expert. U.S.A. made Speed Series Expert 6061-T6 Easton butted aluminum frame with mini-Box chainstays (fits riders 10-12 years old). Integrated seat clamp. New threadless Reynolds 531 butted GT Stiletto fork with mini GT Piston Stem. GT Mohawk 28-holes hubs. Clipless pedals. U.S.A. made GT expert aluminum handlebar. New mini Dyno Lip grips. Padded uni-type saddle.
Top Tube Size
Made in USA.
Third and fourth digits in the serial indicate year of production. 1998 or 1999. MM in the example above indicates production month
Bikes made in USA usually had an 4-6 month production and shipping timeline before they were sold in bike shops around the world. Bikes welded in the second half of the year would normally be made for the following year.
For more detail on what the serial number means on your mid school GT BMX, check out our easy-to-follow serial number guide.