Performance Polyurethane Sway Bar and End Link sets make your vehicle's Sway Bar system much more effective. In effect, it's almost like buying an upscale or higher performance Anti Sway Bar! Your Sway Bar system never had it so good! Replaces that original, short lived and "Too Soft" rubber. Dollar for dollar they offer the greatest improvement in performance handling. Greasable bushings feature zerk type fittings, allowing for periodic greasing. Channels allow for the lube to migrate to where it is needed, Energy Suspension performance Polyurethane Sway Bar Bushings and end links offer the greatest improvement in performance among all the products Energy offers. They make a vehicle's Sway Bar system much more effective like adding a larger, higher performance Sway Bar! Economy, increased efficiency and easy installation are just some of the reasons these products are so popular. Made of HYPER-FLEX™ Polyurethane that lasts much longer than OEM rubber bushings.