From my experience, anything larger than the single piston 12" rear disc brake setup on a Syclone is overkill, especially if you have deleted the ABS. Concentrate on the front where the majority of the breaking is concentrated.
so, none of these kits are a direct bolt on right? modifications to the spindles do need to be made? and the only direct bolt on upgrade is the one from stainless steel brakes, but its not nearly as effective?