I have a couple of questions that I am sure some of you more experienced 1800 riders might be able to answer. First, in reading my owners manual in the section about fuses it talkes about and shows a "speed limiter fuse". What in the world is a speed limiter fuse? My other question is about the rear shocks. If the rear shock is not an air shock, what is going on to increase or decrease the load. Thanks for the help.