Steering Stem Bearing Kit Designed as a drop-in to upgrade OEM ball-type bearings to taper bearings, or a high-quality if your bike comes with taper bearings stock, Tapered roller bearings provide decreased maintenance along with less wear, smoother operation and longer life, Kit comes complete with both upper and lower taper bearing cups, cones, and most include top and bottom seals, Made in the U.S.A