Steering Stem Bearing - Kawasaki Designed as a drop-in to upgrade OEM ball-type bearings to taper bearings (where ball-type bearings are used by the OEM), Designed as a taper bearing seat (where taper bearings are equipment), Kits come complete with both upper and lower taper bearing cups and cones and seals (both top and bottom seals are included in most kits), Tapered roller bearings decrease maintenance along with less wear and longer life