Includes two Wilwood four piston calipers with 1.62″ pistons, rotor mounting hats, hardware and braided stainless steel flex-lines to connect from the hard line on the frame to the caliper. Does not include brake pads. Uses Wilwood vented 11.0″ x .81″ rotor (not included). Easy bolt-on installation. Fits with stock steel wheels, alloys or wire wheels. Each caliper weighs only 4.9 lbs compared to the stock caliper at 9.6 lbs. Also the hat and rotor is 1.2 lbs lighter than the stock rotor. This reduces un-sprung weight by a total of 5.9 lbs per side.