The Targa 4 and 4S versions were introduced in 2006. Like its predecessors, the 993 and 996, the 997 Targa is equipped with a glass roof system. At any speed, the roof can be opened where it drops down 25 mm and slides a metre back underneath the rear window. As the roof weighs an additional , the suspension has been modified as compared to the other Carrera models. When the glass roof is retracted, a small glass deflector is raised above the windshield to aid aerodynamic stability.