For those wanting to upgrade your XJ to better brakes and OEM high steer, this "Flange Spacer" is for you. It is designed to help you upgrade your XJ to the new WJ brakes and tie rod/drag link setup. The ?" thickness of the spacer will move the XJ wheel bearing and hub assembly out the proper distance for proper u-joint center line and brake caliper alignment. OEM WJ knuckles and brake calipers are available directly from your Daimler/Chrysler Jeep? dealer or local salvage yard. Sold each.