Front+Rear 4 Drilled Slotted Brake Rotors & 8 Ceramic Pads for Chevy GMC 2WD 4WD Front+Rear 4 Drilled Slotted Brake rotors and 8 Ceramic Pads For 6 LUG Models Single piston rear calipers only Front rotors: Height:58.1mm,outer diameter:304.8mm,center hole dia:78.7mm Rear rotors: Height:85.1mm,outer diameter: 325mm,center hole dia:78.7mm