• Specialized Bike Serial Number Lookup
• Look Up Trek Bike By Serial Number
• Look Up Specialized Bike By Serial Number
• Search Bikes By Serial Number
• Road Bike Serial Number
• Identify Bike By Serial Number

All bikes¹all have unique serial numbers.

Finding a bicycle serial number

Some Japanese bikes may have an 'X' in the month position of the frame serial number. This was used to keep the physical year of production, for example 'X9' - December of 1979, with the model year of the remainder of the production for that model - 1980. Trek Bike Models/Years/Colors. On this page is a listing of Trek model numbers or names. To the right of each model designation are the year(s) in which the model was sold by Trek. For most models and years, the colors of the bikes are shown in the list. (This is a work in progress.).

Most bicycles have their serial number engraved beneath their bottom bracket, but sometimes serial numbers are found in other places. Here are some examples of where and what to look for:

• The bottom bracket (where serial numbers are typically located) is circled.

• A serial number on the underside of a bottom bracket.

• Another serial number beneath the bottom bracket, aligned parallel to the frame.

• Rad Power bikes have their serial number on the head tube. This is on the front of the bike.

• Some Schwinn bicycles also have the unique identifying number (their serial number) on the head tube.

• A serial number located on a rear dropout. Some BMX bikes and a few Schwinn bicycles place the serial on the rear dropout. On older Schwinns there are numbers stamped on both the drive side and non-drive side rear dropouts; the one on the non-drive side dropout is the serial number.

• Some bikes have multiple serial numbers.²When adding a bike to the Index, it's best to enter all the groups of numbers and letters separated by spaces.

Hopefully you can find the serial number on the bicycle you're looking at - email contact@bikeindex.org if you're having trouble.

Searching serials on Bike Index

Finding bicycles by serial number on Bike Index is a critical part of our functionality. When searching for a serial number, use our serial search bar - it's the second bar on our search form.

We've done a few things to make it more likely that you'll find the bike you're looking for.

• Certain numbers and letters are difficult or impossible to distinguish between (e.g. 0 and O, S and 5). We treat all these numbers the same way - a search for 005LLL will match a bike with the serial OOS111.
• We split bike serials up by spaces and store each separately. If you see multiple numbers on a bicycle - such as in the photo of the Look bike above - try searching for just one of the numbers at a time. Searching for eitherM4106I9CA1 or 200910427-2A will find the bike.
• We do close serial matching - bikes with serial numbers that are close to the serial you entered are shown below the matching results under the heading 'Serial Numbers Close to...' - given a search of a serial number with a couple numbers/letters that are different or missing.
• We do not currently do partial serial searches. If you search for 1234, you will only find bikes with serial numbers of 1234 and serials close to that - not a bike with serial number of 12345689.

1. Okay, fine, so maybe there are a few bikes without serial numbers, but this is rare and typical only on hand made bikes or really old bicycles.↩
2. In this picture 200910427-2A is a manufacturer number and not a serial number. However, to make bikes as easy as possible to find, feel free to enter all numbers you encounter.↩

Use the Cyclepedia Motorcycle VIN Decoder to decode you ATV, motorcycle or scooter VIN (Vehicle Identification Number) for FREE. Determine the year, make and model of most popular ATVs, motorcycles and Scooters. Provide us with your VIN and we’ll give you with the World Manufacturer Identifier, Vehicle Descriptor Section (VDS), Vehicle Identifier Section (VIS), Check Digit, Model Year, Plant Code, Manufacturer Identifier and Sequential Number of production.

Enter the complete 17 digit VEHICLE IDENTIFICATION NUMBER located on the FRAME of your ATV, motorcycle or scooter.

Where can I find my ATV VIN?

ATV VINs are often stamped into the side or front frame rails. Here are some examples:

KYMCO ATV VIN Location – This KYMCO MXU300 VIN is located on the front frame rail.

Yamaha ATV VIN Location – This Yamaha Raptor 700 ATV VIN can be found stamped into the the left side, frame rail, just beneath the shifter.

Specialized Bike Serial Number Lookup

Where can I find my Motorcycle VIN?

Look Up Trek Bike By Serial Number

Motorcycle VINs are usually stamped into the steering neck of the motorcycle. This is located just behind the front forks, behind the headlight (if equipped).

Kawasaki Motorcycle VIN Location – This Kawasaki KLX140 VIN is stamped into the steering neck.

Suzuki Motorcycle VIN Location – This Suzuki RMZ-250 VIN is stamped into the steering neck.

Where can I find my Scooter VIN?

Many scooter VINs are stamped into the frame rails. Often times you will have to remove scooter bodywork to locate the VIN. We have seen many scooters with VINs stamped into the left side frame rails and some with them stamped into the right side frame rails. Additionally, many scooters include an identification plate or sticker that will aid in scooter identification.

KYMCO Scooter VIN Location – This KYMCO Compagno 110 scooter has an identification plate riveted to the right side of the frame.

Where can I find my Side by Side VIN?

Many Side by Sides have the VIN stamped into the frame rail. Check the front and rear wheel wells along the right or left side.

KYMCO UTV VIN Location – This KYMCO UXV500 Side by Side VIN is stamped into the frame rail located in the front right wheel well.

Note: In 1981, the United States National Highway Traffic Safety Administration (NHTSA) initiated a standardized 17-character VIN. The letters I, i, O, o, Q, and q are never to be used so as to avoid confusion with numerals 1 and 0.

These 17 characters are divided up into three groups: World Manufacturer Identifier, Vehicle Descriptor Section, and Vehicle Identifier Section. Let’s break each character down so you can better understand what each stands for.

Character 1
The first character of the VIN tells us which region the motorcycle was manufactured in. For example a 1, 2, 3, 4, or 5 indicates your motorcycle was made in North America while J, K, L, M, N, P, or R means it was made in Asia.

Character 2
The second character, when combined with the first character denotes which country the motorcycle was manufactured in. It’s not uncommon to find a BMW motorcycle made in Mexico or a Japanese ATV made in Canada.

Look Up Specialized Bike By Serial Number

Search Bikes By Serial Number

Character 3
The third character is used by powersports manfacturers to identify the vehicle type. It could be a motorcycle, ATV or scooter. Not every manufacturer uses the same codes.

Road Bike Serial Number

Characters 4 – 9
These characters are known as the Vehicle Descriptor Section. Characters 4 through 8 provide information about the model, engine size and body style options. Not every manufacturer uses the same codes. Character 9 is a check digit that is used to determine if the VIN is correct. It is calculated from the entire VIN through the use of a Weight Factor Table.

Identify Bike By Serial Number

Characters 10 – 17
These characters are known as the Vehicle Identifier Section. The 10th character indicates the marketing model year of the vehicle, not to be confused with the year of production. For example a 2014 Honda CBR600RR most likely has a date of production in 2013 – it was produced for the 2014 marketing year. Characters 11 through 17 indicate the assembly facility, available options and the production number as it rolled off the assembly line.