How to find a bicycle frame number

Most bikes have a frame number stamped into the metal under the bottom bracket. If it is a carbon frame, the number will be engraved on the surface or displayed on a sticker.

Sometimes the frame number is on the inside of the chainstay or on the down tube or top tube. See the diagram below if you need to identify these areas of the bike. Note: 6 digit numbers starting with BS or EN are NOT the frame number.

To help! My bike does not have a frame number

Do not worry. Some older bikes and carbon fiber frames don’t have a number, so you will need to equip your bike with an ID tag.

The easiest and most efficient way to create your own frame number is to use the Datatag system.

the Datatag system includes four engravings to permanently mark your frame and forks and a series of micro-dots to mark the components.

The engravings feature a unique code which is only visible when illuminated by a UV torch of the type worn as standard by UK police. The micro dots also include the code and can be glued to each valuable component using transparent UV glue. You can buy the Datatag system online here.

UV datatag engraving

Still stuck?

Please call us at 0333 000 1234 or send an email to [email protected] and we will be happy to help.

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