decode gd908209 decode giant bicycle serial number

I am tinkering around with the idea of starting to make my own frames, kind of on a 'one-off' basis. The information might also come in handy for deciphering other makes because the factories in Taiwan make bikes for a lot of different companies. The model and year of production was also coded by a letter, so you won't be able to spot a two digit month and two digit year.īefore I left, I was writing a specification to standardize all of the serial numbers because GT was starting to send most of its US production to other US fabrication shops.

There might also be a second letter digit specifying the factory that assembled the bike, if applicable. The first digit would be a letter designating the factory that made the frame. Robinson, Dyno, Powerlite and Auburn included) There were at least four companies in Taiwan that made the GT lines : That's the only one I remember off the top of my head. If the number starts with a K, the frame was made by Kinesis. If the frame was made overseas in Taiwan, it gets more complicated. The last four digits are the serialization digits 0000 to 9999 depending on what number the frame was of the years production.

The first four numbers should be a two digit month followed by a two digit year. The next part of the serial number is eight numeric digits. If the bike frame was manufactured at the Santa Ana CA facility, the first three or four digits of the serial number should be letters abbreviating the model or size of the frame such as 'XL', 'XXL', CR24, or something like that. Here is an email I got from an actual employee of GT:

Decode gd908209 decode giant bicycle serial number