K&N Replacement Air Filter YA-4504 Fits 04-11 Yamaha YFZ450

Get better performance, superior engine protection and more economical operation just by changing your air filter. The K&N air filter gives you increased airflow without sacrificing filtration ability. It's the last air filter you'll ever buy for your car. Each K&N air filter is custom designed to fit into your existing factory air box. It can be washed and reused many times, and since you can usually drive up to 50,000 miles between servicing, you won't have to clean it very often. With most vehicles you simply remove the disposable air filter and replace it with a K&N. Increased airflow improves the efficiency of the combustion process, increasing horsepower and torque. But just increasing airflow without ensuring adequate filtration under those conditions would result in a ruined engine. You can trust K&N to provide the finest quality, most resilient air filters on the market.Improves engine airflowIncreases horsepower and accelerationSuperior filtration without reduced airflowReduces maintenance costsWashable and reusableGet up to 50,000 miles between cleanings under normal driving conditionsBacked by K&N's Million Mile Limited Warranty

Designed to fit in the factory air box