BMC offers its cotton air filters in two versions: "Standard", for everyday use, and "Race", for road or track use. The BMC range covers most current vehicles with different displacements and from different segments: Enduro, Crossover, Custom, Scooter, Superbike, Tourer and even Quad. BMC air filters are washable and reusable. BMC recommends cleaning the filter approximately every 20-25,000 kilometres. The purpose of cleaning is to remove contaminants from the filter surface so that the filter can be used throughout the life of the vehicle in which it is fitted. . The panel air filter is commonly referred to as a "replacement air filter". It is installed in the vehicle's original air filter box to replace the OEM air filter. It is made of high performance materials that allow higher air flow combined with more efficient filtration, guaranteeing that all contaminants down to 7 microns in size are retained (compared to the OEM 10 micron filter). BMC air filters are manufactured using the "Full Moulding" system, which allows the distinctive red filter to be made from a single mould with no welds, preventing easy cracking. The rubber used in BMC air filter systems is durable, extremely hard-wearing and has optimum adhesive properties.