K&N's high-flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom-engineered to fit your specific application and are designed to provide low restriction and increased performance while providing excellent engine protection for your motorcycle. Features: Designed to increase horsepower. Washable, reusable, and engineered to last for the life of your vehicle. Designed to provide high airflow and exceptional filtration. Engineered to fit easily into your factory air box. Only needs cleaning every 50,000 miles under normal highway driving conditions. Specifications: Filter Material: Cotton Gauze Washable: Yes Height: 51mm Inside Diameter: 114mm Outside Diameter: 143mm Filter Re-Oiling Amount: 12ml