So these are real factory dampers and easy to fit. The only annoying thing is that you have to remove the rear wheels to drill a hole to finish the mount. However, this is a good opportunity to see how the factory jack works on your new FR-S, and not just that - drilling only takes a few seconds if you use an 8mm (5/16") bit They fit right in the car, cover the ugly holes my stock FR-S had where it wanted them - and a few weeks later and a few car washes and they fit together Better than the dealer $120 pay for them by a wide margin!