K&N 20-21 BMW R18 1802cc Replacement Air Filter

This K&N High-Flow Air Filter uses layered, oiled cotton media to improve airflow and capture contaminants, designed to fit directly into your factory air box. It's engineered to last for the entire lifespan of your vehicle, meaning you won't need to replace it again under normal highway driving conditions, which typically require cleaning every 50,000 miles.

The unique construction of this filter allows for better airflow compared to standard paper filters, which can lead to an improved throttle response and a slight increase in horsepower. Because it's washable and reusable, you can clean and re-oil it for continued performance, making it a solid option for your BMW R 18 B, R 18 Classic, or R 18 Transcontinental.

This filter is emissions legal in all 50 states and is backed by K&N's No-Hassle Lifetime Limited Warranty, ensuring peace of mind with your purchase.