NIBBI RACING Improved Air Filter YAMAHA YZF/WRF 250/450 14-18 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 14-18 YZ450F 14-17 WR250F 15-19 WR450F 15-18
