The unique shackle design hinges and rotates to allow leaf springs to flex and compress without additional spring stress. TeraFlex Revolver Shackles are self-supporting and fold against themselves on level ground. The shackles work best when combined with suspension and tires appropriate for off-roading. Because the shackles are a bolt-on kit, they can be installed easily with aftermarket suspension systems to achieve an even greater level of performance. When properly installed, the shackles will maximize articulation and wheel droop. No other off-road product improves your vehicle's trail performance with so little investment as the TeraFlex Revolver Shackle. See Application Chart. Sold in pairs.