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 that was started in. How do I find the model year of a Trek bike? I know the serial number and numbers stamped at the bottom of the frame, but I don't know how to find the exact model year.

Update: the answers so far assume you know the model yr, which is what I am trying to determine. The vintage trek website uses SN, but ends with 1997, and I think my trek is. The majority of serial numbers are located under the bottom bracket where the two pedal cranks meet. Prior to Late 1980 Late 1980 to Late 1986 Late 1986 to 1997+įoreign Built 82 to 95 Mid 90s 3-Part Numbers Jazz by Trek Simply turn your bike upside down and record the number. Trek frame serial numbers (SNs) are typically stamped into the bottom of the bottom bracket shell. In the case of some early 80s Treks, the number is under the plastic cable guide on the bottom of the shell. Just remove the plastic cable guide to see the number. The other place Trek (or their subcontractors) stamped the SN is at the lower end of the seat tube. Note: The SN on your original sales receipt may not match the one on your bike. Sales persons sometimes had difficulty reading the numbers. Many Trek bottom bracket shells have a one or two letter code stamped separately from the serial number. This was made by the individual framebuilder to mark his/her work. Serialization Date Bicycle Serial Number Chart If you know which mark was used by a particular craftsman, please let me know. The dates coded in the serial numbers, or the dates inferred from the numbers, are dates on which the new frames were stamped with serial numbers (serialized). TREK BIKE SERIAL NUMBER DECODE SERIAL NUMBERS These dates are not necessarily the same as the model year of the frame. At some time late in each year (beginning generally September or October) the frames produced were created from designs, and painted with colors, for the next year. Hansen can help you read a serial number: Clean the area well, and use lots of light at various angles. Click on image to see an enlarged version. 'Rub the area with candle wax of a color that contrasts with your paint. The wax stays in the indented area of the S/N.

TREK BIKE SERIAL NUMBER DECODE SERIAL NUMBERS.

The second number is the last digit of the year, 6, 7, 8, 9 (for 197X) and.

The first number is the frame size, where. 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. Serial Number Decoding Project Serial Number Decoding Project.

How do you determine the right bike size?.

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Where is the serial number on a Trek bike?.

How do you decode a trek serial number?.

Trek bicycle serial number decoder