2x Rear Steel Lowering ShacklesInstallation InstructionsOur Supreme Suspensions rear lowering drop shackles are constructed of high-strength steel and are designed to lower the rear end of your truck by a full 1". Our shackles include pre-pressed poly bushings for a superior lifted ride quality and are fitted with zerk grease fittings making them easily serviceable to keep your bushings from drying out and eliminate the need for replacement over time.NOTES: An alignment is always recommended after altering the height of your vehicle.