The majority of bike serial numbers can be found in the following locations on your bike. The photo below has arrows that are pointing to each potential serial number location.
- Flip your bike upside down and the serial number is under the bottom bracket.
- On the front of the bike on the headset
- near the rear stays
- the seat downtube next to the crank
- top of crank
VIN stands for Vehicle Identification Number, and can be found on any motorcycle, scooter, car, van etc. It's not something worth memorising however knowing where its etched on your vehicle is worth the 10 seconds it takes. The VIN is 17 characters long and is more or less a code to the vehicle's background. Search Bicycles by Serial Number Please enter the bicycle serial number using only letters and numbers without spaces or other special characters. Enter your Schwinn serial number in the box and click 'find' to see what date and year your Schwinn bike was manufactured. This tool searches a database of Schwinn serial numbers and if it finds a match to your serial number then it will display the information available for your bike. Notes: This tool works for Schwinn bikes from 1948 to 1982. Older bicycles have a serial number on the underside of the bottom bracket. If the number has six digits the frame was probably made in the 1960s, seven digits in the 1970s. Sometimes, the first digit indicates the year within each decade that the frame was made. For example, 1940481 and 2400884 represent 1971 and 1972, respectively.
What is a bicycle serial number?
Most (but not all) bicycles have a serial number. They’re usually referred to as a bicycle serial number, but also at times called a “frame number.” They are stamped onto the frame of a bike and range from 6 to 10 digits long. Some bike manufacturers also include a barcoded serial number on a sticker that is placed onto the bike. The barcoded serial number is different than a frame number in that it’s used by the manufacturer to verify warranties.
Why is the bike’s serial number important?
You can use the bike serial number to register your bike at a bicycle registery such as BikeIndex.org or with the local police precinct. You can prove that bicycle belongs to you by registering your bicycle with it’s serial number. This is very useful if your bike is stolen. The police and bike registries are more likely to find your bike and get it back to you if there’s a serial number associated with it.
Important Tips Regarding Your Bike’s Serial Number
As soon as you get a bike you should record the bike’s serial number. There are two things you should do immediately. First – write down your bike’s serial number onto a paper and store this in a safe place. Secondly, take a photo of your bike’s serial number and email it to yourself. This could come in handy if your bike is ever stolen. You’ll want to make sure you have that number!
What if my bike doesn’t have a serial number?
Unfortunately there are some bikes that don’t have a serial number. If you’ve searched all over your bike and there is no serial number than I would suggest purchasing a registration kit. Project 529 is a widely known and used bike registry that offers kits. These kits will walk you through what you need to do to establish ownership of your bike. It also includes a tamper and weather resistant 529 shield sticker that has a unique identifier on it. You can use the identifier to register the bike to you. While I don’t know if the sticker itself will deter thieves, you will have a specific number that is associated with your bike. Be warned – once you stick these stickers on your bike they won’t be coming off. You can buy the bike registration kits on Amazon.
Related Questions
How many digits is a bike serial number? Every brand is different, and so a serial number can be anywhere from 6 to 10 digits long.
How do I identify my bike? The bike’s serial number is the best way to identify that a bicycle is yours. There can be hundreds of the same color, brand, and type of bike in the world, but the serial number will distinguish it from the rest. This is why the police will ask first thing for a bike’s serial number if you file a stolen item report. Bicycles are stolen all of the time unfortunately. Read this article on what to do if yours was stolen, and what you can do to prepare.
Do electric bikes have serial numbers? Yes, e-bikes also have serial numbers on them. They’ll be located in the same areas you’d search for on a traditional bike. They are still considered a serial number and not a VIN. You can read more about electric bikes and their serial numbers here.
If you’re interested in more Bicycle Commuting Tips check out our articles for beginners!
Here at Surly HQ, all sorts of questions land in our inbox. From time to time, we review them and catch a whiff of something worth exploring.
“How much can I haul with my Big Dummy?”
“What’s better: Riding Loaded or Riding ‘Loaded’?”
“What year is my Surly and how do I read my bike’s serial number?”
All fine questions to be sure, but we’re gonna focus on that last one. So, why does the serial number matter? Well, some Surly riders want to know how old their bike is and which parts are compatible with their frame generation. Others just really like their bike and want to be ready in case someone else rides off with it. (With that said, if you haven't registered your bike yet, set your beer down and register your Surly bike right here.)
Now, the very first Surly bikes don’t have model codes or serial numbers. We’re sorry about that, and we recommend hanging onto those legacy models extra tight so nothing bad ever happens. About 10 years ago, though, we started putting serial numbers on all of our bike frames and forks. Let’s check out how they work.
Frames
As long as you are not currently sitting on your Surly bike, flip it upside-down and put your eyeballs on the bottom side of the bottom bracket shell.
You should see a model name or code stamped into the steel. This’ll look something like “Troll XL” if you’re riding an extra-large Troll, or “1xFun S” if you’re riding a small Lowside.
If you can’t read the serial number, there are a couple of tricks that may help you read the serial number better:
Bicycle Serial Number Check
Trick A: Try using the old crayon / pencil rub technique. Take a piece of paper, lay it on the BB shell, then rub gently with the side of the crayon to see the letters/numbers magically appear on the paper. Straight out of James Bond’s playbook.
Trick B: This is probably the easiest and most effective, so we recommend starting here. Use a flashlight and shine the serial number at a low angle to help create shadows.
Fun Fact: Instead of always using the model name, we’ll sometimes use a code name like 1xFun to amuse ourselves. At the bottom of the Spew, we’ve added a list of all the model codes you might see on a Surly frame.
After locating the model code on your bike, look for a series of letters and numbers nearby. The letter comes first and indicates the factory where the frame was produced. If you see a big “M,” that stands for Maxway. Located in Taiwan, Maxway is currently Surly’s only frame supplier.
Bicycle Serial Number Decoder
Following the factory letter, the first two digits mark the year. Next, two more digits mark the month, and the four final digits tell you the unique production number assigned to your specific bike.
The final result might look something like M19051234, with M once again standing for Maxway; 19 standing for 2019; 05 standing for May; and 1,234 indicating that 1,233 other bikes rolled off the factory floor that month before yours did.
But what if you look for that series of letters and numbers and it starts with a “W” instead of an “M”? We can explain that, too. Axman in Taiwan assembles almost all Surly frames and follows the serial-number format explained above, but starting with the launch of Big Easy in model year 2019, we partnered with a new frame assembler — Willing in Taiwan — because of their familiarity with Bosch electric bike motors and batteries. Willing has also assembled a few model year 2019 Cross-Check and Steamroller frames for us, and they do serial numbers a little differently. Here’s how they look.
Starting with a W for Willing, the second letter is E, which is how Willing identifies Maxway as the frame supplier. Next is the number 9 for model year 2019. Future model years will be coded by a letter instead of a number, such as A for ’20, B for ’21, or C for ’22.
After WE9 comes the production month, marked by A for January, B for February, C for March, and so on. So if, for example, you get your hands on a Big Easy, Cross-Check, or Steamroller assembled in August 2019, its serial number will begin with WE9H. Finally, the serial number will end with five digits indicating how many unique frames rolled off the line before yours that month. A serial number that looks like WE9H00168 means your bike was the 168th Surly frame Willing assembled in August of 2019. It might look a little different from the rest of the Surly serial numbers out there, but that just means your bike is special, which you already knew.
Forks
Because Surly frames and forks are often sold separately, Surly forks need a serial number that’s unique from the one on the frame. And because we currently use three different fork suppliers, our fork codes vary a bit depending on where they come from. The good news? One day all the fork codes might look the same. We’re working on it, anyway. In the meantime, if you have any questions about how to read the code on your fork, contact derby@surlybikes.com or call 1-877-743-3191 and we’ll help you sort that out.
Till next time,
Surly
Here’s that list of model codes we promised.
Giant Bicycle Serial Number Check
Big Easy: BE
Big Dummy: BD
Big Fat Dummy: BFD
Bridge Club: BC
Cross-Check: CROSS
Long Haul Trucker: LHT
Disc Trucker: LHTD700
ECR: ECR
Ice Cream Truck: ICT
Karate Monkey: KM
Krampus: KRA
Lowside: 1xFUN
Midnight Special: MS
Ogre: OGRE
Pack Rat: PR
Pugsley: PUGSLEY
Steamroller: STEAM
Straggler: STR
Troll: TROLL
Wednesday: WED