2011-2013 GSXR600/GSXR750 Race Specific Air Filter (KNNSU-7511R)Breathe easy and boost performance with the Universal 2011 2013 GSXR600 GSXR750 Race Specific 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 Washable and reusable designed to last the life of your vehicle