Air filter, APRILIA

The choice of air filter for Aprilia scooters or motorcycles depends on your model (e.g. SR50, Atlantic, Scarabeo or larger-displacement motorcycles) and on any engine modifications.

As Aprilia uses various systems, here are the main things to look out for when choosing a filter:

1. The main types

• Standard (original type): A paper or foam filter designed for a standard engine. It gives the engine the best protection against dust and sand. If your scooter is standard, always choose this type.

• Performance (high-flow): These are usually multi-layer foam filters (e.g. Malossi Red Sponge) that let the engine "breathe" more easily.

  • IMPORTANT: After fitting a performance filter, the carburettor must be re-jetted (a larger main jet / main jet), otherwise the engine will get too much air, the mixture will go lean and the engine may seize (overheat).

2. What to check before buying

As Aprilia models (e.g. the SR50) changed engines over their production life (Minarelli, Piaggio or Morini engines were fitted), the airboxes can differ:

• Shape: Is the filter rectangular, round or oval?

• Mounting: Does the filter fit into the original airbox, or is it a "mushroom" (pod) type mounted directly on the carburettor?

• Model year: The Aprilia SR50 up to 2003 and from 2004 (the Factory model) use completely different air filtration systems.

3. Maintenance tips

• Foam filters: These need to be washed regularly in a dedicated cleaner or in warm water with washing-up liquid, dried and always lightly oiled with dedicated air filter oil. A dry foam filter lets dust through, which wears away the piston assembly like sandpaper.

• Paper filters: These are not washable. If the paper is grey or black, the filter must be replaced with a new one.

To help us choose the right filter more precisely, tell us your scooter/motorcycle model and year of manufacture.