RED SPONGE Sponge for original filters The filter elements in the flow d air premium, a polyurethane self-extinguishing foam with large filtering capacity designed for sports applications. Red Sponge, you recognize it immediately by the characteristic red Malossi and the brand printed in yellow. Features: - Increased thickness with calculated porosity. - Provide filter good cleaning, which can be further increased umettandoli with oil Malossi. - Selected material produced exclusively for specific use. Perfectly interchangeable to the original, they are particularly suitable for high performance engines.