Originally Posted by south
The master brake cylinder is a part that comes stock in your car to apply resistence to your brake pedel. When you step on the brake pedal, a brake lever attached to that pedal pushes a piston into the brake system’s master cylinder. This cylinder is filled with brake fluid.
You do not have to purchase a new one as your car already has one. Correct me ITRBoI if i am wrong, but you upgraded yours to assist the calipers? Does Spoon make a master brake cylinder? I have been unable to find one.