The 2001 GT Speed Series Ultrabox Frame. State-Of-The-Art Race-Driven Engineering. Usa-Made With Easton Custom Formed 6061 T-6 Aluminum Box Section Chainstays With Integrated Alloy Chain Tensioners. Weight Saving Machined Head Tube And BB Shell. Internal Cable Guide Tube Provides Clean, Rattle Free Routing. Color: Ball Burnished/Gloss Black. Sizes: Junior (TT 18”), Expert (TT 18.8”), Pro (TT 20.5”), XL (TT 21”), XXL (TT 21.5”), Cruiser (TT 21.3”).
S0X00000 S1Y00000
Made in USA.
Unconfirmed. Second digit in the serial indicates year of production. 2000 or 2001. X and Y in the example above indicates production month A to L for Jan to Dec.
Bikes made in USA usually had an 3-6 month production and shipping timeline before they were sold in bike shops around the world. Bikes welded in the later months of the year would normally be made for the following year.