Sliding element guide system for furniture including a cabinet unit rail, central rail, sliding element rail, and a carriage such that the cabinet unit rail, central rail, and sliding element rail are mounted so as to be movable in relation to one another. The system also includes synchronization means including a synchronization element to synchronize movements of elements of the system. Two identical synchronization elements are present on the central rail and are rotatably disposed on the central rail. The synchronization elements are disposed so as to be mutually opposite and mutually spaced apart on both sides of the central rail. The synchronization elements are configured on mutually opposite end sides of the central rail or on mutually opposite external sides of the central rail.