The proposal is for an electronically controllable brake actuation system for motor vehicles with a master cylinder (2) operable by a pedal (1) with braking force transmitters (4, 5) controllable via an electronic control unit (3) to which the wheel brakes (7, 8) of the vehicle are directly connected and can be connected to the master cylinder (2) via hydraulic lines (11, 12) which can be blocked by valves devices (16, 17), with at least one sensor device (13, 22, 23) to recognise the deceleration instruction and at least one simulator chamber (14, 15) co-operating with the master cylinder. In order to improve the operation of such a system, especially the dynamics of the brake pressure transmitter, while reducing the response time of the entire system, the invention proposes that the valve systems taken the form of electromagnetic valves (16, 17) controllable with a delay by the electronic control unit (3). Low-pressure stores (51, 52) are connected to the pressure chambers of the brake pressure transmitters (4, 5) and connected to the wheel brakes (7, 8) in the released position of the brake pressure transmitters (4, 5).