Need some extra lift for your YJ Wrangler? This Rugged Ridge shackle kit comes complete with two front and two rear greaseable shackles, providing 1 inch extra lift. This greasable heavy duty leaf spring shackle kit from Rugged Ridge services front and rear springs on 87-95 Jeep Wrangler YJ. Need some extra lift for your YJ Wrangler? This Rugged Ridge shackle kit comes complete with two front and two rear greasable shackles; providing 1 inch extra lift.