I have a Mach One BMX, help me decipher its serial number I have an all original (as purchased) GT Mach One, but I can not find typical info a serial number and other stampings usually provide. Can any of you steer me in the right direction to help decipher what my serial numbers say about my bicycle? I’ve listed them below so they’re easy to see and copy.
I bought it in 2001, I believe.  It was new, and of that year range.
The numbers are on the bottom bracket, each on one opposite sides as they appear below:

SICT00122
GE 2024
Mach One seems to be a model of BMX made by GT.

Their numbering system seems to be


S - Company that made the frame.  K would mean Kinesis, but Robinson, Dyno, Powerlite and Auburn also made GT frames.   Not sure what company is represented by which letters.
I - Site/location that made the frame.  This is an optional field.
C - Third letter of alphabet, so it was made in March
T - 20th letter of the alphabet, so it's year is 1980 +20 == 2000.


Your bike was made in March 2000, and probably took a few months to arrive at the retailer whence you bought it.

From https://bmxmuseum.com/bikes/info/122/ and others.

You can see 31 "Mach One" BMXs in this search
https://bmxmuseum.com/bikes/search?q=mach&amp;year-start=2000&amp;year-end=2001



Now the bad news - a Mach One has "M1" stamped on the BB by the serial number.   Yours doesn't, so it might not be what you think it is.



You can try registering your GT bike at https://www.gtbicycles.com/can_en/bike-registration  by entering the serial and your email address.   See what they can tell you about it.