Powerlite serial numbers are typically stamped directly into the metal in one of three common locations:

After the GT buyout, many Powerlite frames used GT’s coding system.

Have a mystery Powerlite serial number? Drop a photo in the comments or head over to the BMX Museum forums. Someone’s seen it before.

Some enthusiasts believe the first digit after an "A" or similar letter represents the year (e.g., a "9" for 1979). Others argue these early numbers were purely production sequences. 1990s (GT Era):

Look on the inside or outside of the flat plates where the rear wheel axle slides in. Brake Bridge: