K&N Replacement Air Filter Royal Enf Hunter/meteor 350 '23K&N's high flow air filters are available as a replacement for your stock motorcycle air filter element. They are customengineered to fit your specific application and are designed to provide low restriction and increased performance while providing excellent engine protection for your motorcycle. Features: Designed to provide increased horsepower and acceleration. Pleated cotton media provides a large filtration area offering low restriction, high