This kit replaces those weak/small rear links and track bar that the 4Runners came with. The lower links are made with 1.25" rod ends and 2"x.250" DOM with a bushing on the axle side. The upper arms are made 7/8 rod ends on both sides of a piece of 1.5"x.250" DOM. The track bar uses a set of 5/8 rod ends and 1.5"x0.250" DOM.
Kit includes all the hardware to complete the kit. It will require you to drill out the stock mounts to 9/16s for all the links and 5/8s for the track bar.