Differential-Bore Rear Brake Caliper Kit drastically improves braking performance, Innovative design allows you to keep factory brake lines eliminating the need to replace troublesome factory ABS lines (only kit on the market) , Rear bracket kit properly locates the brake caliper for use with factory diameter rear brake rotors (11.5" brake rotors), Each kit includes billet caliper bracket, brake caliper, jumper brake line, banjo bolt and any necessary installation hardware