The NIBBI RACING off-road air filter is made of polyurethane foam with numerous conical shapes cut into its surface to maximize the external surface area, which is double the external surface area of a standard filter. A larger area to capture dust, sand and dirt ensures optimal airflow is maintained, thus maximizing engine performance and reliability. Tool Compatibility: HONDA CRF R 250 18-19 CRF R 450 17-19 CRF RX 450 17-19
