1Vehicle Fitment: Motorcycle engine air filter is a perfect replacement for Cf Moto NK250 RS250. Please confirm whether your model is applicable before buying. 2Maximum Engine Protection: The air filter offers superior filtering capabilities, providing maximum engine protection from dust, dirt, and other contaminants. 3Improved Fuel Efficiency: The engine air filter ensures the engine receives a sufficient supply of clean air, which helps to improve fuel efficiency. 4Enhanced Motorcycle Performance: Air filter can help enhance the overall performance of your motorcycle, providing a smoother ride and better acceleration. 5Abs Material: High flow air filter is made from premium Abs materials, making it durable, reliable, and long lasting, ensuring superior performance.