Venting the gas emitted by hot brake pads improves overall brake performance and helps minimize fade. Power Slot Power Alloy Brake Rotors are specifically designed to run cooler. In fact, all applications meet or exceed Original Equipment specifications, including vane designs (with some applications featuring curved vane designs) to further promote cooler running temperatures. And the Power Slot Power Alloy Brake Rotor‘s slotted design dramatically improves wet and dry brake performance and is a safer alternative to drilling crack prone holes through cast iron rotors.