VIN (vehicle identification number)

A VIN follows the ISO 3779 standard: the first three characters identify the manufacturer (WMI), the next section describes the model, the 10th character gives the model year and the last characters are the serial number. The letters I, O and Q are not used, to avoid confusion.

On a motorcycle the VIN is usually stamped on the steering head and shown on the registration document. It is the most reliable way to match parts that changed during a model's production run, which is why we ask for it in a part request.