All bikes1all have unique serial numbers.
Finding a bicycle serial number
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.
- Some Schwinn bicycles have the unique identifying number (their serial number) on the head tube. This is on the front of the bike.
- 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 [email protected] you're having trouble.
Searching serials on Bike Index
Schwinn Serial number and date code database. For pre-1948 Schwinns try taking out the crankset to check for a date code. 1992, Le Tour and Super Le Tour models sometimes began with an 'S' followed by the Japan Made numbering.
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 serialOOS111
. - 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 either
M4106I9CA1
or200910427-2A
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 of1234
and serials close to that - not a bike with serial number of12345689
.
- Okay, fine, somaybethere are a few bikes without serial numbers, but this is rare and typical only on hand made bikes or really old bicycles.↩
- In this picture200910427-2Ais a manufacturer number and not a serial number. However, to make bikes as easy as possible to find, we'd love it if you entered all numbers you encounter.↩
For enthusiasts, finding vintage Schwinn bicycles is an exciting hobby. Schwinn bicycles are easy to identify by the Schwinn logo displayed on the bike. But you can also look for the serial number to identify an authentic Schwinn bike. The serial number will also indicate when it was made, which can help you estimate the value of the particular Schwinn bike.
- Look for the balloon frame. Schwinns are best known for the arched bar in the middle of the frame, also called the balloon frame. Not all Schwinns are made with this frame. Some Schwinns follow other popular design models such as 10-speed or mountain bikes.
- Look for balloon tires. Balloon tires are bigger in diameter and can be wider than most other bicycle wheels and are made to go over sand. That is why Schwinns are also called beach cruisers.
- Look for a wide seat. The balloon frames will have a wide seat that is meant to accomodate most of the average bottom size. The seats on Schwinn beach cruisers can be approximately 10 to 12 inches wide.
- Find the serial number on the bicycle. Schwinns produced between 1960 and 1969 have serial numbers on the right rear axle mount (this mount keeps the wheel in place). Look for the serial number on the lower head tube (right above the wheel on the front of the bike) for Schwinns produced between 1970 and 1979. Those produced after these dates will usually have a serial number stamped on the bottom bracket shell (the rear axle hanger holding the wheel in place).
- Identify Schwinns produced before 1948 by looking for either of these serial numbers: B12818 or Z12993.
- Interpret the serial numbers of bikes produced between 1959 and 1964. Those Schwinn bikes produced before 1959 have no real system to numbering but the serials typically contain six or seven numbers or letters. (Go online to Re-Cycle.com for a list of serial numbers between 1949 and 1959.) Those bikes produced between 1959 and 1964 typically start with a letter representing the month it was produced (A=January, B=February, and so on) followed by a digit representing the year (9=1959, 0=1960, 1=1961, 2=1962, 3=1963, 4=1964).
- Read the serial numbers of bikes produced between 1965 and 1982. The numbering system changed. The first letter still represents the month the bike was produced, and the second letter now represents the year. For example, a serial number starting with AA means it was made in January 1965, BA corresponds to February 1965, CC corresponds to March 1967, and so on.
- Distinguish Le Tour or Super Le Tour Schwinn models by looking for the 'S' in front of the serial number. These bikes were produced between 1972 and 1986. The serial numbers will have a letter in the second position representing the month it was produced, and a number in the third position representing the year.
- Take the date of production gathered from the serial number, the model printed on the bike itself, and the overall visual design and compare it to a Schwinn pricing table like that found at OldRoads.com. OldRoads.com will provide some information about Schwinn bikes and pictures of them.
- Do a quick search online at sites like eBay.com or SchwinnBike.com to find other photos of that particular bike model to compare to the bike your interested in. SchwinnBike.com, however, does not have a huge classic bike index to compare older models with. On eBay, look closely at bikes that have a clear number of the serial number so that it will increase the likelihood that you are using an authentic Schwinn as a comparison to the bike you are interested in.
References
About the Author
Si Kingston has been an online content contributor since 2004, with work appearing on websites such as MadeMan. She is a professional screenwriter and young-adult novelist and was awarded the Marion-Hood Boesworth Award for Young Fiction in 2008. Kingston holds a Bachelor of Arts in English from Mills College.
Photo Credits
- Getty Images/Getty Images News/Getty Images