I just put one on my KTM and I love it. The installation is a breeze and the initial set up of the computer is very easy. I used the supplied mounting system and mounted it behind the bar instead of in front, so the bar pad would protect the computer from roost and tree branches. Not sure if it will work with the RMX as Trail Tech has made them bike specific. best advise I can give you is to give them a call, I can attest to the fact that their customer service is SUPERB!!