Allows the leaf spring system to function more effectively.
2113R These bushings also improve lighter-duty leaf spring systems, adding a higher degree of performance and durability.Be in control - when maneuvering through turns, during standing start accelerations, braking, and over bumps and berms. For high-performance applications, the combination of heavy duty/performance leaf springs and ENERGYs polyurethane spring bushings deliver maximum benefit. In either situation, you'll feel the difference in positive handling and control Rear Leaf Spring Bushing Set;Complete Spring And Shackle Set;w/ Three Bushing Shackle;Red;California Residents: WARNING Energy Suspension Rear Leaf Spring Bushing Set (Red) - 4.