Used Wilwood superlite racing brake caliper. This one has 4 pistons, all measure 1 3/4" diameter. Brake bracket attachment holes are 3.5" apart. Comes with a used set of brake pads. This is for a .810" thick rotor. Threads for the fitting are in good condition. This was used on the rear axle of a dirt track race car. Good usable condition. Any questions please ask
