AHL 2pcs Air Filter for BMW F650GS F650 GS 652 2004-2007 Uniform and tiny folds,increasing air through the area,reduce intake noise Reuseable and corrosion resistance,good working condition Using high quality cellulose filter paper,ensure better mileage and engine performance Filter the impurities in the air,reduce wear on the engine,to extend the life of the engine Quality Assurance!If you are not satisfied with our products,we accept all of the return,replacement or refund requests