The BMC FM439/01 motorcycle air filter uses a special cotton gauze impregnated with low-viscosity oil, providing greater airflow than original paper filters. It is manufactured using Full Molding technology from soft rubber as a single piece, with no bonded joints at the corners, helping to prevent the risk of breakage.
- Type: Motorcycle air filter
- Filter material: Cotton gauze impregnated with low-viscosity oil
- Construction: Single piece made of soft rubber
- Technology: Full Molding
- Compatibility: BMW K 1200 R