Bi-directional Dampers (dual direction) provide controlled speed in both extension and compression of the rod from the body. Parts are completely black in appearance, and protection is provided with Nitride finish. End fittings are not installed on dampers, so be sure to select an appropriate end fitting for your application. Technical terms and their definitions are in our FAQ. If you have an OEM or aftermarket application which requires a different size, finish, configuration, or complete sub-assembly please consider our engineered solution services.