Pipercross Ram Pipe Single Socks are designed to fit over Pipercross full radius rampipes and are ideal for applications where clearance is a problem. Filter socks should be oiled prior to use with genuine Pipercross dirt retention additives. Internal diameter - 90mm. Sold individually. These socks are engineered for tight spaces, making them ideal for setups where clearance is limited. They deliver optimal filtration and airflow for both road and competition environments. Choose between single and dual sock configurations to match your specific needs. Built with the same commitment to quality as our renowned filters, these socks offer reliability and durability you can count on.