The system replaces the dampers of all four wheels with interconnected hydraulic cylinders.
The system passively interconnects the front and rear suspension systems in order to optimise suspension performance in both on-road and off-road environments.
The system provides very high roll stiffness while keeping the individual stiffness of each wheel low. Different constructions of the system, passive and active, are available. A design where the front and rear antiroll bars are connected is also available. It got successfully used by Citroën Motorsport in their Xsara WRC rally car.