Air filter Athena for Aprilia 125 Mojito Custom / Retro 1999-2002

What does an air filter do?
An air filter is a component of the motorcycle's fuel system.
It filters the outdoor air that is conveyed to the combustion chamber.
There are different types of engine air filters, each manufacturer designs its own shape for use on its vehicles.
Air filters differ both in shape (they can be round, ring-shaped, panel-mount, cone and cylinder shaped, etc.) and material of which they are made: the two most common ones are made of paper or cotton but some of the motorcycle air filters are available in terry cloth or other fabrics.

When to change the air filter and how to maintain it ?
Wear and tear and filtering capacity vary according to different factors such as the type of filter, the type and quality of road traveled, and the maintenance and cleaning performed on the filter.
Having said that, it is possible to provide a few general guidelines.
If traveling mostly on city or medium-clean roads, an air filter can easily last from 20,000 to 30,000 km.
However, it is always recommended to check the mileage expected by the manufacturer for replacement in the Use and Maintenance manual.
As far as maintenance is concerned, a clear distinction must be made according to the material: Paper air filters are NOT designed to be cleaned while fabric filters can be washed and greased with special products and thus have a much longer lifespan.