This K&N air filter is perfect for motorcycle enthusiasts who own 2018 - 2024 KTM Duke series bikes. Whether you're riding on the city streets or hitting the open road, it will improve your bike's performance. It's a drop - in replacement, so it fits right into your factory air box. There's no need to worry about its lifespan as it's built to last as long as your vehicle. It uses layered, oiled cotton media to capture contaminants and improve airflow, giving you a smoother and more powerful ride.