It came with a little extra then what I was expecting. Adjustable and lateral locks. I installed it myself and it was honestly pretty straight forward with the exception of a couple YouTube videos on the install. The part itself is a significant difference on the side by side comparison from oem. I highly recommend it. Once installed it doesn't make the ride bumpier at all to me, it definitely feels was more responsive and stiff in corners and highway turns. I feel any ST owner should buy at such a great price and with a simple enough install, its an easy and great benefit to gain!