2x Rear Steel Lift Spring ShacklesInstallation InstructionsSupreme Suspension heavy duty steel lift shackles have been designed and built with quality in mind. These shackles are designed and tested to lift your truck 2" in the rear easily and are CNC machined from high-strength steel to prevent corrosion and to provide a reliable lift for the life of your truck.NOTE: An alignment is always recommended after altering the height of your vehicle.