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. The larger surface area to capture dust, sand and dirt ensures optimal airflow is maintained, thus maximizing engine performance and reliability. Tool Compatibility: YAMAHA YZ250F 14-18 YZ450F 14-17 WR250F 15-19 WR450F 15-18
