Chas said:
Why not just connect your existing clutch master cylinder to the rear brake caliper?? This is much more cost effective. If the master cylinder uses brake fluid, it is a piece of cake. If the master cylinder uses mineral oil, the oil can be flushed out then back bled with DOT 3/4 brake fluid.
I believe there is a seal problem with doing this. The KTM/Husaberg clutches use mineral oil and the seals in the lever assembly are not compatable with brake fluid. A friend of mine delt with this a few years ago on his KTM he was setting up so he could use it (he is paralyzed in both legs below the knee from a road bike accident and cannot tell what his feet are doing without looking at them). The only way you can use the stock clutch lever is to slave it to the rear master cylinder (the incompatable fluids never mix) but then things get a bit weird if you use both the pedal and the lever at the same time. He finally obtained some of the proper seals and had a continuous line made to go to the rear brake and removed the pedal/master cylinder completely.
It can be done but you need to change out the seals and then get a brake line long enough to go to the rear brake.