The most important part of a snorkel is the top, it can be installed in a "head" surge.

The advantage of these heads, is to allow a greater filtration of impurities, it will further increase the performance of the snorkel.

The new  designs incorporate a revolutionary separation of sand and dust, getting only between clean air to the engine.

Explanation of the operation:

1 - The Dirty outdoor air, enters below the cyclonic filter.
Spend a kind of turbine that makes the air begins to turn inside the clear plastic casing (middle).

2 - The air begins to rise, hitting the top of the filter, driven by the centrifugal force of the air.

3 - When hitting the top, there is the expected effect and weighing particles (sand, dust, etc ...) are propelled into the container.
Staying there and not get out (to drain the bowl occasionally).

4, 5 - The clean air entering the engine.

Available 4 sizes of cervical internal measures:

Small: approx 6.4 cm
Medium: approx 7.65 cm

Big: approx 8.5cm

Huge: approx 9.8 cm

Left (small), Center (medium&Big), Right (Huge)