61-4040Custom design reduces intake turbulenceIncludes K&N round filter elementHigh air flow with excellent filtrationWashable and reusable air filterThe K&N Flow Control System utilizes a custom designed base in combination with a unique lid designed to reduce intake turbulence. The resulting smooth, laminar flow enhances cylinder filling, horsepower, and torque. The filter element is the world famous K&N Filtercharger for the ultimate in airflow and filtration.