The 465 Series R.A.P. (Remote Adjustable Preload) is a state of the art high pressure gas monotube shock design for the new Harley-Davidson M8 Softail models. It utilizes a large 46mm bore with deflective disc damping, preload adjustable threaded body and a 5 position rotatable rebound damping adjuster. The beefy 16mm hard chrome shaft rides on custom viton seals for a low friction and leak free life. Every shock includes a R.A.P. mounting bracket and instructions on various R.A.P. mounitng options depending on your bike model.