$75.00 (50% off retail new) Offering a used Booster Plug that fit a 2014 BMW R1200GS (water cooled) for only $75.00. It may fit other models but I can only speak to this specific one. Overall condition is excellent as this was installed on a well-cared for motorcycle, always garaged and kept clean, in a dry desert climate. Ready to be reused on your BMW, just check fitment specifications. This was probably the simplest and most impressive performance enhancement item I have ever owned (30+ years riding experience). My observations were that cold starts were smoother, idling was smoother and throttle response was crisper. Installation and fitment were spot on. Installation video is available on YouTube. Takes minutes with no special tools required. Thanks for looking.