This upgrade replaces the standard taper roller bearing and pivot and solves the problems of early wear and difficult servicing experienced with the original item. The design incorporates an external grease nipple, so no dismantling is required for servicing. A pair of blanking bolts are provided for when the grease points are not in use. Made from AISI SAE 4140 which is a chromium molybdenum alloy steel widely used in high tensile applications such as axles.