K&N AIR FILTER YAMAHA YFZ450 04-05 YA-4504-T

Replaces stock air box lid. Snaps in place, no air box modifications required.

• Increases air flow.
• Designed for racing.
• Eliminates restrictive intake snorkels.
• Designed to increase horsepower and throttle response.
• Washable and reusable K&N filter element.
• Dyno tested. 

Note: Do not use without the standard air filter fitted to air intake system. For added performance, we recommend using a K&N replacement filter as your primary filter. The Powerlid is not intended for use in water or muddy conditions.