Description Fitment Features Get superior filtration through a unique open cell foam Allows more clean air to your engine for peak performance, combined with improved dirt holding capability Washable and re-usable Uni, the OEM supplier to Harley-Davidson, features a complete line of replacement air filter elements UNI elements are made of a unique, open-cell polyurethane material, allowing maximum air flow while still providing superior filtration Manufactured from patented open-cell polyurethane filter foam Designed for full depth filtration and increased air flow over stock