This is called dimple drilled and slotted. Dimple drilled, meaning that the holes on the rotors is not drilled through from side to side. This new method of making drilled rotors, is the next generation of cross drilled and slotted rotors. This make the rotors stronger, it will not crack like your conventioal drilled rotors does. It has been tested with 20% cooler over stock rotors. It has the same exact looks as your regular conventional cross drilled rotors, but without the crack.

You regular cross drilled rotors will crack, unbalanced, easily warp. Will give you a lot of problems if it even last that long.

Dimple drilled and slotted is the next generation of hi-performance aftermarket brakes upgrade. It is the only way to brake.