This RetroRides BMW K Series (K100 / 75 and other series models) YSS suspension replacement rear shock absorbers from the Topline range, is high efficiency gas shock absorbers that can be adjusted according to the user. There are 4 main features to this shock: 1. It has a threaded preload adjuster which the user can turn in order to personalize their setting. 2. It has rebound adjustment. 3. Hi and Lo compression adjustment 4. The shock is completely serviceable. There is also the option to fully customise the look of your BMW K Series shocks in a number of ways via our partner in Netherlands – YSS Suspension Store. Note that this shock is 305mm in length. Check out the options below: