K&N DU series air filters for Ducati Motorcycles are designed to increase horsepower and torque. DU series air filters use a pleated media that provides a large filtration area with long service intervals. Like all K&N auto filters, DU Ducati motorcycle air filters are washable, reusable, pre-oiled, and ready to ride. These filters are easy to install and include a 10-year / million-mile warranty.