Jeep JK Rear Coil Spring Spacers for cooperative energy suspension are made from thick polyurethane materials to ensure extra stability. These spacers keep up production line ride quality. They are installed on top of stock spring, and accessible in black. Installation procedure is straightforward and do not require any drilling or welding. Should you require some additional space for your 32inch tires, then you need not look further than these coil spring spacers.