This shot shows where the majority of our weight savings are coming from. On the bottom is one of the 11.75x1.250 drilled cast-iron rotors that came off the car. It weighs in at 7.7 pounds. On top of that is one of the scalloped lightweight steel rotors that’s the same diameter for equal clamping load, but just 0.38-inch thick. It weighs in at just 4.1 pounds. That’s a savings of nearly 14.5 pounds cut from the car in rotors alone!