Which size drive belt do I need for my Vespa?

April 13, 2022 Stefan Technical Support

We often get the question which size drive belt is the right one.

This depends on various factors, check the table with pulley / belt combinations here.

The sizes from the table are guidelines and we assume that the original parts are used.

Lots of parts will be altered on a moped through the years.
Therefore it's important to check you current setup:
Which type of Swingarm, Discs and Pulleys are installed.

These are all variables which influence the correct size of the belt.
In the table below you will find a overview with the sizes for belts and their pulley size.

Please note that your engine also can be adjusted, this enables you to tighten or loosen the belt.