Gt Bmx Serial Number Decoder

Anything youve noticed me leaving out please post it. Heres a collection of serial number examples to help you figure yours out.
Early Santa Ana serials, rear dropout.
31765 Can be found both with as well as without a model abreviation nearby. 3 for the third month March. 1 for the year 1981.
Santa Ana serials, rear dropout.
7841112 with a model abreviation stamped nearby.(3, 4, L4, Jr, FS, I, M1, M1M, PE, JPE, XL, XXL, XL E, 24, F) 7 for the 7th month July. 84 for the year 1984. Same code in the 1990s as well.
GT6842174 without a model abreviation. GT for GT. 6 for the sixth month June. 84 for the year 1984.
GT00185 without a model abreviation. GT for GT. 001 for the production #. 85 for the year 1985.
If the serial is just like these on the rear dropout but without a model abreviation its also US made, but in Huntington Beach.
7872459 without a model abreviation. 7 for the 7th month July. 87 for the year 1987.
Japanese serials.
Some of the Japanese factory's stamped the serial's on the rear dropout.
5X02157 with a baseball symbol. 5 for the year 1985.
5L0139 with a baseball symbol. 5 is for the year 1985. L for the 12'th month December.
GH891203267 G for the production line. H for the factory. 89 for the year 1989. 12 is for the 12'th month Dec. 90 model.
DH900413372 D for the production line. H for the factory. 90 for the year 1990. 04 is for the 4'th month April.
Some of the Japanese factory's stamped the serial's on the bottom bracket.
65J03205 6 for the production line. 5 for the year 1985. J for the 10'th month October.
G5I2981 G for the production line. 5 for the year 1985. I for the 9th month September.
F6026521 F for the production line. 6 for the year 1986. 02 for the 2nd month February.
T8040164 T for the production line. 8 for the year 1988. 04 for the 4th month April.
KS89111512 K for the factory. S for the production line. 89 for the year 1989. 11 for the 11th month November. 90 model.
Taiwanese serials, usually on the bottom bracket. Sometimes they are on the rear dropout though.
DS6I2760 DS for the Factory. 6 for the year 86. I for the 9'th month September.
DS7122150 DS for the factory. 7 for the year 1987. 12 for the 12'th month December. 88 model.
N0573129 N for the production line. 0 for the year 1990. 5 for the 5'th month May.
KGH1E3951 K for the factory.GH for the production line. 1 for the year 1991. E for the 5'th month May.
KG2A00220 K for the factory. G for the production line. 2 for the year 1992. A for the 1'st month January.
This one is made in the same Kinesis factory in Taiwan as the last two.
KGCG02419 K for the factory. GC for the production line. G for the 7'th month July and C stands for Year 1993.
Most foreign serials decode the same as those do but have different numbers of digits and letters.
YC96H39112 YC for the factory. 96 for the year 1996. H for the 8th month August.
YC4H3221 YC for the factory. 4 for the year 1994. H for the 8th month August.
ACI4L01724 AC for the factory. I for the production line. 4 for the year 1994. L for the 12'th month December, 95 model.
FY96133615 FY for the factory. 96 for the year 1996.
S8IY14150 S for the factory. 8 for the year 1998. I for the 9th month Sept. Y for the production line.
8Y6J03148 8 for the production line. Y for the factory. 6 for the year 1996. J for the 10'th month October, 97 model.
SY6A000250 S for the factory. Y for the production line. 6 for the year 1996. A for the 1'st month January.
IG9D0211 I for the factory. G for the production line. 9 for the year 1989. D for the 4'th month April.
Heres a couple foreign serials that are different than the others.
HM160798Q HM for the factory. 6 could be for the year 1996. The Q at the end is for the production line. The one I saw with this serial number is a 97 which tells me the 6 could mean it was built in late 96 as a 97 model or there is no build date whatsoever in it.
LS167495 LS for the factory. 1 for the production line. The one I saw with this number was a 94. Which means theres no build date in this serial.
[b]GT serials info page - http://bmxmuseum.com/bikes/info/122/

Gt Bmx Serial Number Decoder

Last edited by Johnnny (2013-08-24 12:58pm)

Here is an email I got from an actual employee of GT:

If the bike frame was manufactured at the Santa Ana CA facility, the first three or four digits of the serial number should be letters abbreviating the model or size of the frame such as 'XL', 'XXL', CR24, or something like that.

If the bike frame was manufactured at the Santa Ana CA facility, the first three or four digits of the serial number should be letters abbreviating the model or size of the frame such as 'XL', 'XXL', CR24, or something like that. The next part of the serial number is eight numeric digits.

The next part of the serial number is eight numeric digits. The first four numbers should be a two digit month followed by a two digit year.

The last four digits are the serialization digits 0000 to 9999 depending on what number the frame was of the years production.

If the frame was made overseas in Taiwan, it gets more complicated. If the number starts with a K, the frame was made by Kinesis.

That's the only one I remember off the top of my head.

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There were at least four companies in Taiwan that made the GT lines :

Robinson, Dyno, Powerlite and Auburn included)

Freebandz reminiscing about stashing “23 bricks in a speaker” and driving “Chevy Impalas and Regals, man.” His past in the drug game still informs his actions today, which is something Future seems bittersweet about. Awaken, #FutureHive, your idol has a new video. Future where i came from download. Future shows us “Where I Came From” in his new video. Today, it’s Beast Mode cut “Where I Came From” that gets the treatment. One of the more melancholic tracks on the tape, this one has Mr.

The first digit would be a letter designating the factory that made the frame. There might also be a second letter digit specifying the factory that assembled the bike, if applicable. The model and year of production was also coded by a letter, so you won't be able to spot a two digit month and two digit year.
Before I left, I was writing a specification to standardize all of the serial numbers because GT was starting to send most of its US production to other US fabrication shops.
The information might also come in handy for deciphering other makes because the factories in Taiwan make bikes for a lot of different companies.
I am tinkering around with the idea of starting to make my own frames, kind of on a 'one-off' basis. I am also teaching welding at a local community college.
By the way, did I tell you that the guy ran GT's in house fabrication for the last ten years (he recently retired) was none other than Gilbert Axt. Who? Do you remember Race, Inc.? That was Gilbert.
He also did the original PK Ripper for SE Racing. History, man.
It might be a really cool thing if I can track down Gilbert now and interview him for you.
THAT is the kind of stuff that belongs in the BMX Museum!

Gt Bmx Serial Number Lookup

Later. I'll write you when I get a chance. Dan Garcia

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and here is the updates, thanks to love thegoose! (Michael S)
well we get a good bit of gt serials that could be identified by the owner, if they only had the tips that some of us have learned, so i will post what i know, and anyone with more knowledge can add to it.so here we go.
here is an example to go by. on the dropout you have 'M1' followed by '08922198'.this one is simple.
M1 stands for 'mach one' that is your model gt.
it can also be a 'I' for interceptor and so on.
next on the serial is '0892' this is easy to decode too,
08 means 8th month, which would be august.
then you have '92' next in the lineup, this would be 1992
the last 4 digits, are your build number, this one would be the 2,198th one built.
Here is another example. if your serial is KGCG2297 this one gets a little complicated. but still easy once you learn the code to it.
the first letter is who made the frame itself, in this case it would be 'Kenisis', an overseas company.this could be replaced by another letter but at least we know what that one is there for.
next is the letter 'G'.this isnt always there, but if so, this is where it was assembled, (ever notice the built in usa sticker on your gt or dyno?) this is what that letter is there for. it wasnt made here, but was built here.
next is the letter 'C'.C is the 3rd letter in the alphabet, and march is the 3rd month, so march is the build month.
next is the letter 'G' this is the year. G is the 7th letter in the alphabet,
so this would be a 1987.
here is one more.your serial resembles this:f6030578.
to start, if you have a 'baseball' looking stamp behind your serial, this frame was made overseas..no its not a pacific, so dont cry, or get mad..and lets continue.
on this serial, the first number is the last digit of the year, so 6 stands for 1986
next is '03'..this is the third month.which is march.
so you have a gt built in march of 1986.
but still use the museum as a guide to id the frame, cause sometimes you can find the year, but getting a posotive id on the model isnt possible without knowing which style frame you have.
this doesnt apply to new gt's, but hopefully some people with info on those will chime in. this isnt always going to match your serial, you may have a 'fake'.its not likely but it happens. also on earlier models this can differ. this is for the 2 most popular style serial's i see on here. also, common sense tells you that if you have a suspected 'gt' frame, look it up and compare it in the musuem, knowing which style frame you have will help with the process of id'ing your bike with the serial, especially if the serial has some damage that prevents you from getting the full number.
hopefully this bit of info can be used for everyone, and this will save you from those late nights sitting around waiting for a response to your post looking for an answer to the idendity to your gt..although i do feel smart and proud when i can answer these posts. well, thats it for me, if anyone else has info on serials or if you see a mistake in this guide, tell me so i can edit it. happy holidays people.

Gt Bicycle Serial Numbers

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Gt Serial Number Lookup

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