Here is our 2.5 inch diameter spring rubber isolator. These are sold individually, and are used with our coilovers located on top of the spring. The rubber isolator goes between the spring, and aluminum spring plate or top mount. These are hard to mistake, and we have included high quality pictures for you to view before you make your purchase to make sure this is the part you need. We’ve had clients misplace these as well as tear them so we offer these replacements right on our website to get you fixed right up.