# Question: How do you read a Trek bike serial number?

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Sean Hickey suggested the first numeral is the year of manufacture, and the letter is the month of the year (A – L). This is confirmed by serial numbers that were submitted by other Trek owners. If there are two letters after the year numeral, the first is the month. The second runs from A through at least Y.

## How do you decode a trek serial number?

Serial Number Decoding Project

1. Serial Number Decoding Project. …
2. 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. …
3. The first number is the frame size, where. …
4. The second number is the last digit of the year, 6, 7, 8, 9 (for 197X) and 0 for 1980.

## Can I look up my Trek bike by serial number?

You will not be able to determine the model by serial number- the numbers on a bicycle are not like the VIN on a car. I suggest that you look here Home – Bicycle Values – BicycleBlueBook.com and search the Trek database.

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## What do the numbers mean on Trek bikes?

Trek used to have numbered series of bicycles. The first digit indicated which series. 1X00, 2X00, and 5X00 were road bikes. 3X00, 4X00, 6X00, and 8X00 were mountain bikes. 7X00 were hybrids.

## How do you measure a Trek bike frame?

Trek frame size used to be measured by the length of the seat tube. But modern mountain bike geometry is based on reach, not seat tube length. Alpha sizing is simpler and helps you find the right fit by the measurement that matters most.

## How do I know the size of my Trek bike?

Measure the distance from fingertip of one hand to fingertip of the other. This will give you your arm span. Subtract your height from this figure to get your Ape Index. If the result is positive (your arm span is greater than your height) you should go for the larger size of bike.

## Can you look up a bike serial number?

Can you look up a bike serial number? Yes, you look up your bike’s serial number. They are usually situated under your bike’s bottom bracket.

## What year is my bike by Vin?

The 10th character in the 17-character VIN represents the vehicle model-year. This standard applies to vehicles built in or after 1981. Before 1981, the VIN format was not standardized and varied by manufacturer.

## How do you tell how old a bike is?

Indeed, please check your bike’s registration certificate (RC). It will have the date of manufacturing which is normally month and year. If you don’t have the RC then it may be complicated. You will have to look for the engine and chassis number engraved on the bike.

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## How is a bike frame measured?

Place the end of a tape measure at the exact center point of the gear crank (the metal post that runs through the center of the bike’s chain sprocket). Then run the tape measure up to the top of the tube. Measure to the point where the tube ends. This will give you the length of the seat tube which is the frame size.

Trek 3700 – 13″

## Do Trek bikes run small?

To just briefly answer your original questions: yes, all Treks ran small vertically, and C-40 explained why. A good case in point is your 58 cm 5200 with its short 14 cm head tube. The 57 cm Orca you’re looking at has an 18.2 cm head tube, so the bars will be coming up to meet you.

## How do you measure inseam on bike?

Your bike inseam is the length from the underside of the groin to the bottom side of the ankle. Both measurements are in inches.