K&N Air Filters invented the reusable high-flow cotton air filter back in 1969. Needless to say, they are a leading producer of performance air intake systems and air filters for Harley Davidson motorcycles. K&N's products have evolved ever since and have become a symbol of efficiency and durability. The company sells over 5,000 products manufactured for different kinds of vehicles, including cars, motorcycles, trucks, and engines. K&N sells products to over 30 countries in the world and is a trusted brand.