These K&N air filters are designed to fit applications where a conventional air filter won't--like in aftermarket air cleaners or in custom-made air filter systems. They're available in a variety of shapes and sizes and outflow any other filter on the market--up to 900 cfm--for power gains of up to 15 hp. These K&N air filters use a special surgical cotton fabric soaked in oil as a tack barrier. Sandwiched between aluminum screen wire, the square holes in the cotton catch tumbling air and straighten it out. Since air moving in a straight line flows faster, these filters can actually improve airflow. They come pre-oiled and ready to install. So, if you want to replace your old air filter, or if you just want more airflow from your air filter, then you need to get one of these K&N air filters.

Shipping $6.99.