14-19 HONDA Grom: Koso Hurricane Racing Air Filter Want better performance with a simple change? Using the Hurricane racing air filter intake will increase the airflow, improve filtering efficiency and raise the engine output performance.The Hurricane racing air filter is a high-quality foam filter that i Koso is not responsible for any damages caused to the parts, vehicle, or to yourself and others. Engine parts are not under warranty nor is collateral damage or cost of labor, in cases of malfunction.