The Power Wonder-Lift completely replaces your old manual crank handle and regulator. The cable-driven design works smoothly across a wide range of glass sizes and door configurations.

Unlike rigid regulator systems that demand precise alignment, SPW's unique floating coined and slotted metal tube design allows the regulator to self-adjust as the window travels, accommodating the variations in door geometry, glass angle, and channel alignment that are common in rebuilds and restorations. The result is smoother operation with less binding, less stress on the motor, and a more forgiving installation.