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