Dating suntour parts
Nationally (the Products were sold to bicycle manufacturers in China and incorporated as a component in bicycles then sold in Australia).
Retailers include Trek, Giant, Merida, GT and Scott brand bicycles.
If you view the chart, specific numbering styles are starting to appear.
Each different numbering style may represent a different factory.
For example, we believe the prefix KY represents 1980 production for at least the Legend and the Classique.
We also use the term "generations" when it comes to dating Lotus bicycles, as sometimes a specific model, like the Excelle, was made for 10 years.
If you check out the Serial # Chart, you may be lucky enough to have a serial number close to a bike that has already been dated.
The two-letter prefix found on many serial numbers does seem to represent model years, or ar least production runs.
The final numbers are the individual frame numbers.
So number P3151234 was the 1234th frame number built during the 15th week of 1983.Plus, the multiple sizes used for vintage seat posts makes it inconvenient to swap one out just for the heck of it.