1. This air filter is specially designed for Honda models, suitable for models such as CRM250, XR250, XR350, XR400, XR440, and XR600. During the design process, the needs of these models were fully considered. Through careful manufacturing, it can be perfectly adapted to the vehicle. 2. The parameter specifications of this air filter are precise. The connection thread, seal ring size, inner diameter, outer diameter, overall size, outer diameter × height, intake pipe diameter, and exhaust pipe diameter are all strictly controlled to ensure its stable and reliable performance. 3. Its function is very important. It can effectively filter the air entering the engine, block dust and impurities, and provide clean air for the engine. In this way, it can ensure the normal operation of the engine, extend the service life of the engine, and improve the overall performance of the vehicle. 4. It has a wide sales range and is quite popular in regions such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East, which fully proves its practicality. Whether for daily commuting or long - distance driving, this air filter is a reliable partner for the car.