The rear brakes are even simplier than the front brakes. All you need to do is knock out those two pins, and remove the pads and the spring. Once those pads are out, take a flat-head and push those calipers back so that you can fit in the newer, thicker pads. Insert the pad, and then the spring and re-insert the pins, and off you go! Pump the brakes a few times and you outta be on your way for endless more miles!