The know-how acquired on the circuits is directly integrated in the production of the series filters, offer the most demanding motorcyclist a product that has been proven, works well and is constantly evolving. The materials used are the best currently available on the market. Filters are made from a single rubber frame to prevent breakage. The filter element is made of a special cotton fabric (4 layers) soaked in low adhesion oil. It consists of an aluminum mesh treated with an epoxy solution to resist gasoline vapors and oxidation. In addition, cotton has the advantage of being washed and reusable. These characteristics guarantee a higher air flow rate than the original paper filters, a minimum pressure drop of the incoming air and therefore better engine performance.