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:


GE 2024

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  • 2
    So what do you actually want to know about this bike? – Argenti Apparatus Oct 13 '18 at 1:23
  • Curious it’s actual age and origin of MFG , any other info the serial provides that someone would want if looking to purchase. – Millennialmach1 Oct 13 '18 at 1:59
  • Try and figure out why your photo is not loading. The max permitted size is 2 Megabytes. Or post it on Imgur.com and add the link, and someone else can sort out getting the image in-line. – Criggie Oct 13 '18 at 6:36
  • I don't understand why this would be "unclear what you are asking for". These questions are difficult to answer, but against all odds this even was answered. – ojs Oct 13 '18 at 19:54
  • Thank you ojs, I was almost able to figure it out thru google and other links but just merely escaped me and this is one place google led me.. simple question about serial numbers, what’s so un clear?!?!? – Millennialmach1 Oct 13 '18 at 20:54

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

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.

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  • Sorry, I have no idea what the GE 2024 could represent, nor what the individual letters might stand for. My google-fu is weak today. – Criggie Oct 13 '18 at 6:53
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    Thanks for all who understood my simple questions and added what they could to help. The knowledge provided is great and will help me figure it out. It’s possible they simply took an interceptor frame and Mach one decals and sold to me. It was a bike shop in Mesa Arizona amd I believe it’s still operating. I in fact know I still have the receipt to this bike somewhere but I have receipts for almost everything and it’s basixally a bill if sale from memory.. nothing specific. Which also means shady. Thanks again I’ll keep plugging away. – Millennialmach1 Oct 13 '18 at 20:56
  • @Millennialmach1 try registering your serial number and email address with GT at that link. It might work. – Criggie Oct 15 '18 at 9:08

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