K&N Engine Air Filter: High Performance, Premium, Powersport Air Filter: Fits 1990-1999 HARLEY DAVIDSON (FLSTC, FLSTF, FLSTS, FXST, FXSTB, FXSTC, FLHR, FLHT, FLHTC, and other select models) HD-1390

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