Speedy Brake Kit Drilled and Slotted Disc Brake Rotors Front SB4054X2RED - Red Kit Includes 2 Front Drilled & Slotted Rotors G3008 castings machined to O.E. specifications, requiring NO modifications Feature a signature ""short slot"" design. The slot improves brake system performance by wiping away the debris of used friction material that otherwise accumulates between the rotor and pad. This helps prevent pad glazing.