Specifically Designed: Specially designed for dirt bikes to improve dirt bike performance.High Performance: The air filter makes the throttle response faster and enhances the power of your dirt bike.Durable: The filter material is non-woven, not easy to rust, very durable, and easy to clean.Easy to Install:In order to make your installation easier, we provide you with a clamp, you can easily adjust the size.After Sales Service:You can contact us if you have any questions, we will serve you 24 hours a day.Product Description Material:Four layers of nonwoven fabric. Size:48mm Color:Red Package Including:1x 48mm Air Filter??NOTE: Since you purchased NIBBI’s products, you have one-to-one service. Whether you need any advice, or encounter any problems, such as: modification, upgrade, adjustment. You can contact us, we will give you professional advice.