The 1987 GT Pro Series. Borrowing most of its component group from the team model comes the Pro Series™, truly a first class racing machine, pure bred for com-petition. Look for the distinctive new frame design at the track in GT Blue, Chrome, Black and White.
Headset Size
1"
Seatpost Size
22.2
Top Tube Size
Unknown
Original Colours
XX860000 XX870000
Made in USA.
The XX in the example above indicates production month. The third and fourth characters in the serial indicates year of production. 1986 or 1987.
Bikes made in Overseas 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.
