As mentioned in the thread, there is in fact a bmx that was made with a AWD set up. They also did a set up for Mountain bikes. The company was called Turner Drive Systems. I have a bmx and a mountain bike setup. Someone said earlier in the thread that it would be much more useful if you could disengage the AWD set up for MTB use. With the set up that I have, you are able to disengage the AWD.