Locating your Bike’s Serial Number

The majority of serial numbers are located under the bottom bracket where the two pedal cranks meet. Simply turn your bike upside down and record the number. If there is no serial number there then check places like the headset at the front of the bike or the rear stays. The diagram indicates the five most common serial number locations. If you just can’t find anything then you can either engrave your driver’s license number or describe the bike the best you can when registering and maybe even take a picture with it to prove ownership.

The best chance at recovering a stolen bicycle is having a registered serial number. These numbers are used by police across the nation. You need the manufacturer's serial number to register your bicycle.

Where to find your serial number:

Locations of frame and components with serial and frame numbers:

  1. Frame number under the bottom bracket
  2. Horizontal to the frame from the bottom bracket to the strut rear suspension
  3. On the diagonal brace from the seat tube to the rear suspension or on the connector beneath the seat tube.
  4. A number at the top and bottom of seat tube can be provided on all sides.
  5. At the front of a frame, numbers are usually stamped front or at the side
  6. At forks and suspension forks are serial numbers and numbers from reputable manufacturers usually punched in the triple clamps.
  7. Possible labels with serial numbers of the manufacturers
  8. Hubs and hub of reputable manufacturers usually have serial numbers
  9. Manufacturer and serial numbers of Gear shifts