Info On Mongoose:
http://www.vintagemongoose.com/
_______________________________________________________________________________________________
1975 to late 1977 the frames have no brake bridge, and had the coaster brake mount welded on. back then the serials were sometimes only 4 numbers, so looking at the frame was the only way to id the year.
Late 1977 to mid 1979 they added the brake bridge but lost the coaster mount.
Mid 1981 to early 1982 they started using the stepdown dropout with the 2 holes machined in it, thus, the birth of the 'super' dropout.
So here is the serial breakdown.
If it starts with: TC, this means its a team or supergoose. supergoose came in chrome only, the teams were nickel plated with either a blue or red coating. here is an example: TCA0****
UPDATE: it seems that some time around 79-80 and later, some supergooses were made, but not in chatsworth. They must be overseas frames but came in chrome so are supergooses.
That would be a team (or super) january (a) first month, '0' for 1980 mongoose.
Another hint is the supergooses had three (3) holes in the brake bridge after october 1981.
To help make sense of the lettering is simple: if yours starts with CH9****
the 'C' stands for chatsworth', which is where the original goose shop was in cali. If you had the 'T' in front, it meant it was a higher model, (team or super) if you have no 'T' its a motomag or standard version. the 'H' in that serial is the 8th month, which is sept. And the '9' is the last digit of the year.1979. Sept of 1979 mongoose.
Some early serials start like this: CE9 or CD9.these 2 are May of 1979 & April of 1979.
CC1 412709 = March of 1981
Now to the 80's, this is the rough part.
1983: the first looptails come out. *update* the serials this year only give you the year, month, and build number, not the model.
M3-K8634 would be mongoose/1983/K november/ 8634 (build number)
M3-I6885
In 1983 you are on your own figuring out the difference between a cali,or expert, the only other frams were the mitigoose, and supergoose, which are easy to figure out. Other than the cruisers which are easy to i.d. as well.
1984: the serials change again. Like this:
M4CF****
M4JI****
84 is another mystery.frames match but we need more serial entries like these.
1985: gets easier (after emailing numerous owners all over numerous sites)
Here is the clarification i hope:
M5EK**** 1985 expert made in November
M5CE**** 1985 cali made in May
M5CF**** 1985 cali made in June
M5CD**** 1985 cali made in April
This is from a lonnnngg list of 85 goose serials i have been storing and a few hints from a few that claim to know the secret.
1986: gets wierd again, remember this is when the freestyle thing came in, and some companies started selling out or going overseas. I only have one clear example here due to lack of serial posts.
M6EH**** 1986 expert built in april.
I have one goose decade serial, the owner said the decals didnt look like a 1987, heres the serial
M7L*****.1987 right, but made in december 87.so would be considered an 88. but the cali and expert style frames carried the same serial (this is when it got wierd with the sellout)
here is an expert serial from the same year:
M7H*****
We need more serial posts and any info, the mid to late 80's got confusing, this is the rough draft, but i busted my grass figuring out how to tell whats what, at least the most popular 85 goose owners know what they have.
This help with the blue max owners, but the serials are close, so once again, posting pics helps. this is the first draft, maybe we can add some pics to this. thanks avery (LAMBOHAHA),michael (MCATER)and jim (HUTCHHEAVEN) for some great info. this should get more detailed, i will keep working on it over time, email me if something needs to be added.
Here are a couple exsamples how to Read early 90s to Mid 90s SN's:
M90073096
Solution Pro
'90' = 1990
HBBG01007
Expert
2nd 'B' = Year = 1992
'G' = Month = July
HCCE06454
Menace
2nd 'C' = Year = 1993
'E' = Month = May
FEH00319
Villain
E = Year = 1995
H = Month = August
FEH04685
Villain
E = Year = 1995
H = Month = August
HCCG05057
Expert
2nd 'C' = Year = 1993
'G' = Month = July
HBEB005411
Expert
'E' = Year = 1995
'B' = Month = Feb.
HFFF00125
Expert Pro
'F' = Year = 1996
'F' = Month = June
HFFG07292
Expert Pro
'F' = Year = 1996
'G' = Month = July
HFFI05146
Expert Pro
'F' = 1996
'I' = Sept.
ACL600343
Menace
'6' = Year = 1996
HFGB00168
Expert Pro
B = Month = February
G = Year = 1997
HQIH00585L
Menace Pro 25th Ann.
H = 8 = August
I = 9 = 1999
HAMKI02922
Sniper Pro
I = 9 = September
K = 11 = 2001
http://www.vintagemongoose.com/
_______________________________________________________________________________________________
1975 to late 1977 the frames have no brake bridge, and had the coaster brake mount welded on. back then the serials were sometimes only 4 numbers, so looking at the frame was the only way to id the year.
Late 1977 to mid 1979 they added the brake bridge but lost the coaster mount.
Mid 1981 to early 1982 they started using the stepdown dropout with the 2 holes machined in it, thus, the birth of the 'super' dropout.
So here is the serial breakdown.
If it starts with: TC, this means its a team or supergoose. supergoose came in chrome only, the teams were nickel plated with either a blue or red coating. here is an example: TCA0****
UPDATE: it seems that some time around 79-80 and later, some supergooses were made, but not in chatsworth. They must be overseas frames but came in chrome so are supergooses.
That would be a team (or super) january (a) first month, '0' for 1980 mongoose.
Another hint is the supergooses had three (3) holes in the brake bridge after october 1981.
To help make sense of the lettering is simple: if yours starts with CH9****
the 'C' stands for chatsworth', which is where the original goose shop was in cali. If you had the 'T' in front, it meant it was a higher model, (team or super) if you have no 'T' its a motomag or standard version. the 'H' in that serial is the 8th month, which is sept. And the '9' is the last digit of the year.1979. Sept of 1979 mongoose.
Some early serials start like this: CE9 or CD9.these 2 are May of 1979 & April of 1979.
CC1 412709 = March of 1981
Now to the 80's, this is the rough part.
1983: the first looptails come out. *update* the serials this year only give you the year, month, and build number, not the model.
M3-K8634 would be mongoose/1983/K november/ 8634 (build number)
M3-I6885
In 1983 you are on your own figuring out the difference between a cali,or expert, the only other frams were the mitigoose, and supergoose, which are easy to figure out. Other than the cruisers which are easy to i.d. as well.
1984: the serials change again. Like this:
M4CF****
M4JI****
84 is another mystery.frames match but we need more serial entries like these.
1985: gets easier (after emailing numerous owners all over numerous sites)
Here is the clarification i hope:
M5EK**** 1985 expert made in November
M5CE**** 1985 cali made in May
M5CF**** 1985 cali made in June
M5CD**** 1985 cali made in April
This is from a lonnnngg list of 85 goose serials i have been storing and a few hints from a few that claim to know the secret.
1986: gets wierd again, remember this is when the freestyle thing came in, and some companies started selling out or going overseas. I only have one clear example here due to lack of serial posts.
M6EH**** 1986 expert built in april.
I have one goose decade serial, the owner said the decals didnt look like a 1987, heres the serial
M7L*****.1987 right, but made in december 87.so would be considered an 88. but the cali and expert style frames carried the same serial (this is when it got wierd with the sellout)
here is an expert serial from the same year:
M7H*****
We need more serial posts and any info, the mid to late 80's got confusing, this is the rough draft, but i busted my grass figuring out how to tell whats what, at least the most popular 85 goose owners know what they have.
This help with the blue max owners, but the serials are close, so once again, posting pics helps. this is the first draft, maybe we can add some pics to this. thanks avery (LAMBOHAHA),michael (MCATER)and jim (HUTCHHEAVEN) for some great info. this should get more detailed, i will keep working on it over time, email me if something needs to be added.
Here are a couple exsamples how to Read early 90s to Mid 90s SN's:
M90073096
Solution Pro
'90' = 1990
HBBG01007
Expert
2nd 'B' = Year = 1992
'G' = Month = July
HCCE06454
Menace
2nd 'C' = Year = 1993
'E' = Month = May
FEH00319
Villain
E = Year = 1995
H = Month = August
FEH04685
Villain
E = Year = 1995
H = Month = August
HCCG05057
Expert
2nd 'C' = Year = 1993
'G' = Month = July
HBEB005411
Expert
'E' = Year = 1995
'B' = Month = Feb.
HFFF00125
Expert Pro
'F' = Year = 1996
'F' = Month = June
HFFG07292
Expert Pro
'F' = Year = 1996
'G' = Month = July
HFFI05146
Expert Pro
'F' = 1996
'I' = Sept.
ACL600343
Menace
'6' = Year = 1996
HFGB00168
Expert Pro
B = Month = February
G = Year = 1997
HQIH00585L
Menace Pro 25th Ann.
H = 8 = August
I = 9 = 1999
HAMKI02922
Sniper Pro
I = 9 = September
K = 11 = 2001
History of BMX Products, Inc. Skip Hess started BMX Products, Inc. Out of his home in Simi Valley, California in September 1974 with his first product being the famous Motomag One wheel. According to Skip “When the Motomags were the first and only product I produced, I could remain working from my home and garage in Simi Valley. 1975 serial numbers were a hand-stamped five number, individual frame ID. They begin at 10001 and continue until early 1976 when a revised stamp begins to include place of manufacture indicated with the letter 'C' ( for Chatsworth, California) followed by the five number individual frame ID. Later Schwinn serial numbers / years made. Bicycles from Japan made in the 70’s have a production month letter in either the first or second position and a. Frame ID Serial # Interpreting the Serial numbers and features on BMX Products, Inc. Identifying the serial numbers on the early Mongoose frames is actually. Note the flared shape of the 7. First off, I have what was told to me as an 88 Mongoose Decade Pro, pink and chrome, all original, but looks to be more like an 87 to me due to the crank sprocket, anyways, serial number is M7-A1914.
Last edited by lovethegoose (2007-02-02 8:20pm)
GT serial numbers., I m All I ask is for a little serial number help, but with this being a BMX site, with knowledge on old school GT, Titan, Mongoose. Vintagebmx.com hosts a lively community of over 15,000 members who come together to trade BMX serial number should be letters serial numbers because GT.
The first thing everyone wants to know when the buy a second hand GT BMX is ‘how old is it?’ Reading the GT serial number and finding out the build date is an important part of any BMX restoration. Once you now when the old GT BMX bike was built it’s much easier to find out what model it is and also look at the original parts lists and colours from the bike makers catalogues.
A while back I spend some time investigating how to read mid-school and new school serial numbers on Mongoose BMX bikes.
After buying and restoring a number of older mid-school and new school GT BMX bikes I also need to to figure out how to crack the GT serial numbers to get the same build date information.
It didn’t take long to realise there were many similarities when looking at GT serial numbers and Mongoose serial numbers. The placement and sequence of the numbers is stamped in the same place under the bottom bracket. Many of the GT serial numbers start with the same letter sequence. After a bit of digging around online I soon realised that GT BMX bikes and Mongoose BMX bikes were owned by the same company and also made in the same factories in Taiwan. In fact look closely at many Mongoose and GT BMX’s from the around 2000 to 2010 and you’ll see many similarities in frame design and geometry. This is probably not true for all of the bikes in either range, but there were a number of bikes that were identical apart from the logo stamping. Anyway that’s a post for another time.
Is lgup available for mac. As with the Mongoose serial numbers there are many posts from forum members around the world on old-school GT serial numbers, but very little on mid-school or new school.
Of course there are also many variations in GT serial numbers and I have focussed mainly on cracking the new-school numbers for now. That is bikes made between 2000 and 2010, and those bikes made in the Taiwan factories with specific serial number sequences. There will be bikes that are different, if you have any examples of where this crack doesn’t work, add a comment below.
GT serial numbers are usually found stamped on the bottom of the bottom bracket of your BMX. This is not always the case and there will be some bikes that do not fit into this formula. W_kevlar.mdl download.
For mid-school GT BMX bikes built in Taiwan through most of the 90’s with a serial number that begins with 4 letters before the series of numbers. The 3rd letter corresponds to the year of manufacture.
Serial Number
Mazak ajv 25 405 user manual. 1991-2000 – 4 letters at beginning, 3rd is year
![Bmx Bmx](https://refoundrides.files.wordpress.com/2016/01/redline-mxii-no-serial-bars-stem.jpg?w=590&h=590&crop=1)
A B C D E F G H I J
91 92 93 94 95 96 97 98 99 00
91 92 93 94 95 96 97 98 99 00
The 4th letter indicates the Month
A B C D E F G H I J K L
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
A few examples are:
HFGB00000 – 4 letters, GB are the dates. G is the year (1997), B is the month (Feb)
HFBH00000 – 4 letters, BH are the dates. B is the year (1992), H is the month (Aug)
For new-school GT BMX bikes built through most of the 2000’s with a serial number that begins with 5 letters. The 4th letter corresponds to the year of manufacture and follows on from the mid-school serial numbers.
2001-2010 – 5 letters at beginning, 4th is year
K L M N O P Q R S T
01 02 03 04 05 06 07 08 09 10
01 02 03 04 05 06 07 08 09 10
The 5th letter indicates the Month
A B C D E F G H I J K L
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
A few examples are: Pyramid solitaire 1.
HAMRF00000 – 5 letters, RF are the dates. R is the year (2008), F is the month (Jun)
HAMOI00000 – 5 letters, OI are the dates. O is the year (2005), I is the month (Sept)
Please note: The GT serial number will give you the build date of your GT BMX. Frames were normally manufactured the year before being sold in bike shops. Weatherby orion shotgun serial numbers. So a build date on a frame of 2003 usually means the bike was sold in stores in 2004.
If you want to know more about the GT BMX you have, visit our BMX Catalogue website. You'll find all the original catalogue info you need including original parts lists, specs, colours and photos of restored bikes.
There is no function for me to reply to comments left on this post.If you have a BMX and don't know what the serial number means. I might be able to help. Go to our Facebook page https://www.facebook.com/rerides.bmx and give us a like! Then upload a photo of your bike and the serial number. We'll take a look and try to help you out.
Series Serial
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