Prior to Late 1980 | Late 1980 to Late 1986 | Late 1986 to 1997+
Foreign Built 82 to 95 | Mid 90s 3-Part Numbers | Jazz by Trek
Missing Serial Numbers
Serial Number highlighted with red wax. Click on image to see an enlarged version. (Photo by J. Hansen) |
Prior to Late 1980 | Late 1980 to Late 1986 | Late 1986 to 1997+
Foreign Built 82 to 95 | Mid 90s 3-Part Numbers | Jazz by Trek
Missing Serial Numbers
PRIOR TO LATE 1980
Serial Number Decoding Project Niche genetics survival game free download. Nearly two hundred Trek owners submitted their frame's specifics to help decode the serial number system used from 1976 to late 1980. Our thanks to these generous cyclists. These serial numbers have seven characters, in the form L N L N L N N, where L is a letter and N is a number. Here are the results: The first letter is the model designation. The letter code indicates frame model, which would include bike models made from that model of frame.
The first number is the frame size, where
The second letter represents the month the frame was serialized:
The second number is the last digit of the year, 6, 7, 8, 9 (for 197X) and 0 for 1980. See note below,****, for year exceptions. Again, this is the date of serializing, not necessarily model year. The last three characters - The final letter ranges from A to Z and the final two numbers go from 01 to 99. The last letter might be a run designation, with the last two numerals the frame number in that run? Alternatively, the letter extends the range of the character from 0 to 9 (if a number) to 1 to 26. This gives a range of 2600 for the 3 characters. Any other ideas for these last three characters? The rest of the code defines time to a month. Perhaps once Trek was nearing more than 2600 bikes/frames of a given model per month, a new serial number scheme needed to be developed. Hence the change to the sequential system started in late 1980. Notes:
****Year Exceptions:
When a Trek frame was repainted by Trek, an additional set of numerals was often stamped into the bottom bracket to indicate the frame was repainted. These numbers were usually four digits, in the form NNNN. |
LATE 1980 TO LATE 1986
Table I - 1980 to 1986
Beginning Serial Number |
- Table I contains dates of frame serializing, and are not necessarily model year. At some time late in each year (generally September or October) frames were built for (then painted with colors for) the next model year. This journal information is summarized by year in Table I. The year designations in the table are approximate; not all of the runs are sequential in time. This may be a result of subcontracting some frame fabrication.
- For some years, the model number given may be the lowest number (or an X00 number) for a series of models that have the same frame. For example, a 1981 frame appearing on the list as a Model 610 could have been built into either a 613, 614, or 616 bike.
- Some of the Model 170 serial numbers are 6 digits but do not follow the numerical sequence. A future task is to sort 170 numbers. Some of these are presented in the 83, 84 link at the bottom of the table.
- Some early and mid 80s bottom brackets were marked with 58TSI or 60TSI. In the early 1980s Tim S. Isaac designed new lugs and a new bottom bracket shell for Trek. The new bottom bracket shell is typically marked with 58TSI (or more rarely, 60TSI). This designation is not part of the serial number but is a model number of the shell. The TSI are Tim's initials. The 58 or 60 refer to the angle between the seattube and the downtube.
- Some frames in this period have a leading 'A' before the 6 digit number. This may be more prevalent on lower level models. The 'A' may not be part of the SN. Just disregard it when looking up the number in the tables below.
- Frame Sizes in the SN list below are as given on the paper copy. For some entries, only a two-digit number was given, the extra 1/2 or 3/4 inch was dropped. So - an entry of 22 inches really means a 22.5' frame size, 19 means 19.75', 25 means 25.5'.
- The list has two major gaps, corresponding to missing pages. Page 9 ends with SN 027870 and the next page starts with 029118. Page 61 ends with 210065 and the next page starts with 215226.
- The SN list for 1986 has some serial number ranges with annotations about POs (purchase orders) to 'Merida'. These are for Model 800, 830 and 850 mountain bikes and Model 300 road bikes. These were made late in the year, so they probably were all 1987 models. At least some of these were provided to Trek as 'frames only'. One reported SN in these ranges, for an 850, was prefaced by the letters TML. From the serial number list, the number of Trek frames or bikes made by Merida late in 86 totaled at least 8251.
Merida is a Taiwanese bike company that was established in 1972. It is currently a major, worldwide player in the bicycle business. See http://www.merida.com/ for information on this company.LATE 1986 to 1997+
Table II - Model Years 1987 to 1997
Serial Numbers Include |
270821, 284237, 284335, 293788, 301294, 304445, 304940, 307880, 308292 |
309634, 316981, 319336, 335133, 346451, 347944, 356837, 360384 |
369203, 379079, 391236, 406793, 427402, 438108 |
513747, 532881, 563678 |
579529, 629426, 653761, 740528, 79xxxx |
771408?, 840762, 873805, 883719, 900224 |
1035688, 1087?34, 1106529, 1109196, 1125523, 1125738 |
1164917, 1269067 |
1331934, 1406630, 1431480, 1439467, 1506862 |
1544446, 1878372, 1955570 |
1876296?, 1963294 |
FOREIGN-BUILT FRAMES AND BIKES 1982 to MID 90s
![Decoder Decoder](https://bikeindex.org/assets/serials/serial_bb-828cc784a7d75f6d88fdcf965c918732ab06ede90ee22157fd34c6c88a8353c1.jpg)
MID 90s 3-PART SERIAL NUMBERS
990 18 31 9406
750 17 B10407
![Number Number](/uploads/1/3/3/8/133866131/319936637.jpg)
M B1 0406 8000 18
Bicycle Serial Number Lookup
O | Q | S | U | W | Y | |
1993 | 1995 | 1997 | 1999 | 2001 | 2003 | 2005 |
M,N, M | P, P, P, P | R, R | S, S | T, T, T | U | X |
B | D | F | G | H | I | J | ||
2007 | 2009 | 2011 | 2012 | 2013 | 2014 | 2015 | ||
A, A | B, B, | J, J, C | D | E, E | G | H | I | J |
JAZZ BY TREK
- A Flipside model had the serial number JT0116 stamped on the bottom bracket shell. The JT probably stands for 'Jazz' and 'Trek'. The numbers may be the sequential frame number, beginning at 0001.
- The second type is a 10-character serial number. The first two characters are letters which are followed by eight numbers. Examples are JT09010099 and FI08003231.
- A Latitude model has a 10-digit, all-numeric serial number: 1230707859. This number also was stamped on the bottom of the bottom bracket shell.
MISSING SERIAL NUMBERS
Prior to Late 1980 | Late 1980 to Late 1986 | Late 1986 to 1997+
Foreign Built 82 to 95 | Mid 90s 3-Part Numbers | Jazz by Trek
Missing Serial Numbers
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