Replacement Air Filter

The K&N Air Filter KT-1211 is engineered to provide a virtually unrestricted airflow for specific KTM motorcycle models, including the RC390 and 390 Duke, while maintaining critical filtration levels to protect engine longevity. Developed from materials and a design philosophy honed in desert motocross racing, this filter utilizes a high-flow cotton gauze medium. The construction involves layering four to six sheets of cotton gauze between aluminum wire mesh. This media is then pleated and treated with a special oil to maximize its filtering capabilities and boost overall performance. This washable and reusable air filter is built to last for the expected lifespan of a motorcycle engine. Its design allows significantly more air to enter the engine compared to stock filters, contributing to improved performance and efficiency. By choosing a K&N filter, riders can expect a blend of increased power, better acceleration, and reliable engine protection throughout their riding experience.