Pipercross filters allow air to flow long after other air filters have reached their maximum

dirt capacity.

Why Foam?

At the heart of the unique pipercross air filter is a specially developed polyurethane foam

which acts as the filtration medium, having both higher performance and life expectancy than

paper.

Pipercross reticulated foam is created by a chemical reaction, it is then placed in a gas

filled combustion chamber where a controlled explosion burns away any complete cell walls in

the material to form a skeletal cellular structure which is strictly quality controlled.

This process, which is specified by Pipercross ensures that the foam consists of tiny open

cells which trap contaminants.

The cell size of the foam, its porosity, is measured in Pores Per Inch (PPI). Pipercross air

filters use up to six layers of foam with varying porosity descending in pore size in the

direction of air flow.

The Pipercross filters long life span is due to the dirt storage capacity of the foam cells

and the filters construction which means no air passage is blocked until all the cells in a

layer of foam are completely filled. It is designed to hold contaminants in the filters

outer layer, inner layers act as a secondary measure to ensure an exceptionally high level

of engine protection.

Up to + 3-5bhp and 3-5lbs/ft