I installed EECCP struts on the rear window liftgate of my limited edition 2007 Jeep Commander. Installation was quick and easy, taking less than 10 minutes for both sides. the pressure to lift the disc is almost perfect, again fast and efficient. It takes a constant amount of force to close a window regulator before it clicks, and it's proportional to what I'd expect it to feel like initially. Great product for OEM comparison