Bmx Serial Number Starting With K (2025)

Between 1981 and 1983, a rare three-letter prefix KGA , KGB , or KGC was used for Kuwahara frames welded by G.J.S. Bicycles in the USA. Vintage Kuwahara Frame Serial Number Guide

The "K" identifies the factory rather than the final brand.

In many Kinesis formats, the digit immediately following the "K" or the factory code represents the last digit of the manufacture year (e.g., K8... could signify 1988, 1998, 2008, or 2018). 3. GT Bicycles "K" Designations Bmx Serial Number Starting With K

Typically follows a K + Year + Month + Production Number sequence. Decoding Example: K4C0560 K: Kuwahara factory. 4: Manufactured in 1984. C: Manufactured in March (A=Jan, B=Feb, C=Mar, etc.). 0560: The 560th frame produced that month.

For vintage enthusiasts, a "K" prefix often points to a factory-stamped Kuwahara frame. These were most common between , though some appeared as early as 1980. Between 1981 and 1983, a rare three-letter prefix

While the main serial number is typically on the bottom bracket, these model-specific stamps are often located on the rear dropout . 4. Other Possible "K" Meanings

In the broader bicycle market, a serial number starting with "K" frequently indicates a frame manufactured by , one of the world's largest frame producers. Kinesis has built frames for dozens of brands including Diamondback , Raleigh , Nishiki , and GT . In many Kinesis formats, the digit immediately following

Some vintage Diamondback and other Japanese-made BMX frames may have "K" prefixes associated with the Koizumi factory, often located on the non-drive side rear dropout.