2006-2011 Kawasaki VN900 Vulcan Classic/2006-2010 Vulcan 900/2007-2011 VN900 Vulcan Custom Rep Air Filter (KNNKA-9006)Breathe easy and boost performance with the Universal 2006 2011 Kawasaki VN900 Vulcan Classic 2006 2010 Vulcan 900 2007 2011 VN900 Vulcan Custom Rep Air Filter from K&N. This high flow replacement air filter is designed to increase horsepower and acceleration while providing outstanding filtration. Unlike disposable paper filters, K&N filters are washable and reusable so you buy once and never worry about replacements again. Features High flow design