The NIBBI RACING off-road air filter is made of polyurethane foam with multiple 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: YAMAHA YZ250F 19-20 YZ450F 18-20 WR450F 19
