Improves vehicle handling Maintains proper alignment while corneringGreat for lowered or raised vehicle set-ups. The firmer durometer distorts much less than original rubber bushings when changing ride height . Full floating, for smoother operation Use for both front and rear of suspensions. Polyurethane is finally becoming the most widely used leaf spring bushing material in use today. For high-performance applications, the combination of heavy duty/performance leaf springs and HYPER-FLEX? polyurethane spring bushings deliver the maximum benefit. These bushings also improve lighter-duty leaf spring systems, adding a higher degree of performance and durability. In either situation, you'll immediately feel the difference in positive handling and control.Pit Stop USA offers Energy Suspension Rear Control Arm Bushings - Fits 66-87 Century, 67-88 Chevelle - Monte Carlo - Gray 3-3132G at low everyday prices. Be sure to check out all of our products from Energy Suspension including Energy Suspension Trailing Arm Bushings.