AIR FILTER RTECH KAWASAKI KX250F 21-24 KX250X 21-24 KX450F 19-23 KX450X 21-23The Rtech Air Filter's design, high quality materials and superior construction deliver unbeatable performance and protection Rtech filters are designed to increase airflow while ensuring the highest level of protection from dirt dust. Coarse open pore foam catches airborne dirt, grime and sand. Fine open pore inner foam acts as a second filter to trap the smallest particles while ensuring maximum air passage. Exclusively formulated adhesive ensures