Arlen NESS Black Polyurethane Riser Bushing Kit601082542 Product Description Black coated versions of the Industry leading polyurethane dampening kits A must when installing new handlebars or bikes with heavy engine vibration Eliminates flex while isolating vibration Proprietary polyurethane bushings are specially made to reduce vibration as well as add a more positive and rigid feel to your handlebar Heavy duty cup washers will not bend or distort like factory units Each kit includes polyurethane