BMC 2025+ BMW M 1000 RR Replacement Air FilterBMC replacement sport air filters are high performance filters, offering a higher airflow than conventional air filters and thus positively impacting the engine's combustion process. They can be easily exchanged for the original air filter, are regenerable, and therefore have a virtually lifetime lifespan. Made from a multi layered cotton fabric impregnated with a thin oil. The filter fabric is reinforced by an aluminum mesh, which is protected from