BMC Air Filter FM01067_BMC_AIR. BMC replacement air filter The know-how acquired on the racetracks is brought directly into the production of the series filters, to offer the discerning motorcyclist a product that is tried and tested, performs well and is in a constant evolution. The materials used are the best that are currently available on the market. The filters are made from a single rubber frame to prevent breakage. The filtering element is made of a special cotton fabric (4 layers), soaked in an oil with low stickiness. It is comprised of an aluminum mesh treated with an epoxy solution to be resistant to gasoline vapors and oxidation. Cotton also has the advantage of being washable and reusable. Thanks to these features, the BMC sports air filters (replacement air filters) guarantee a higher air flow compared to the original paper filters, a minimal pressure loss of the incoming air and thus lead to better engine performance. Durability: washable and reusable, no replacement needed – Wider filter surface – Maximum air permeability (4 layers of cotton) – Higher absorption and filtering – Better pressure drop ratio – Tested by international test procedures. 1x BMC Air Filter. Product Type: Air Filter. You can send us a message by using the “Questions and answers” section towards the bottom of the page.