K&N Replacement air filter compatible with Honda CRF450R & CRF450RX 2017 / CRF450RWE 2019 CRF250R CRF250RX 2020 (HA 4517XD)

ULTIMATE LONGEVITY: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle ENGINEERED POWER: State-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration; Clogged or dirty air filters can reduce your vehicle’s acceleration by up to 10% EASY INSTALLATION: Pre-oiled and ready to install; One of the easiest and most cost-effective upgrades for your motorcycle or ATV for quick performance gains SAVES MONEY: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters ECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste; A K&N filter will last longer than 10 disposable filters WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants HIGH QUALITY: Made in America