Exotek 22S HD Aluminum Rear Hubs feautre a heavy duty design that maintains your suspension geometry settings, race after race. These hubs are non-directional, meaning they work as either the left or right hub, and also allows you to raise or lower the hub height thanks to the standard and optional hinge pin holes. The upright ball stud mounting matches the stock roll center height and allows for easy roll center changes by adding shims under the ball stud