These coil springs isolators are made of superior Hyper-Flex(TM) polyurethane material which saves replacing time and time again lasting 3 to 10 times longer than the original rubber ones.
These install to your frame the same way as OEM the isolators and do not adversely change ride characteristics.
In the front these can replace your worn our rubber isolators or be added to them for 3/4" lift. For the rear they can be added to the original thin rubber isolator for 3/4" lift as well.
97-06 Jeep Wrangler TJ Front or Rear
84-01 Jeep Cherokee XJ Front
93-98 Jeep Grand Cherokee ZJ Front or Rear