Standard knuckle joint. Used on all of the Minis for rear, but for front only until 1984. This knuckle joint can be used as is with adjustable suspension trumpets. 1984 onwards models had a thick washer under the knuckle joint to raise the suspension a little in order to raise ride height. In 1990 the spacer was built into the knuckle joint. We sell spacer washers and spacered knuckle joints if using factory trumpets.