K&N Air Filters Aprilia

The Original High-Flow Air Filter Since 1969 K&N Engineering has been designing, manufacturing, and enhancing High-Flow Air Filters for the motorcycle enthusiast interested in maximising horsepower and acceleration. K&N warrants its street vehicle OE Replacement Air Filters for one million miles. When used properly and found to be defective, return your filter and the receipt from purchase and K&N will replace it free of charge.