I would like to know if there is a good place to fine complete braking systems either hydraulic (preffered) or servo based. (IE : Hydraulic - Master cylinder / Brake Lines / Caliper or similar with Servo based application)I‘ve looked around and only found replacements for the discs them selves.
If you look on the FG Modellsport website, some of their more expensive on road cars have 4 hydraulic disc brakes at each wheel. These will no doubt be quite expensive spare parts, but will provide plenty stopping power if set up properly.