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front airride

  1. Roadking-1960

    Front airride

    Coming winter i'am planning to install a front airride on my 2004 RK. Can anyone explain to me how this works?. Seems to me that a air-tight piston is placed on the spring ,which is pressed down by air-pressure. If this is so, why has the piston a threaded hole at the bottom,and a small hole in...