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 bushings, inner steel sleeves and heavy duty black coated cup washers.