Includes two Wilwood four piston calipers with 1.62″ pistons, mounting hardware and braided stainless steel flex-lines to connect from the hard line on the frame to the caliper. Does not include brake pads or rotors. Uses stock size 10.82″ x .5″ 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. This reduces un-sprung weight by 4.7 lbs per side.