MC4 Rear Pro Street Parking Brake Upgrade Kit uses the MC4 parking brake to upgrade Forged Dynalite Pro Series Rear Brake Kits: 140-2111 thru 140-2118 and 140-3018, 140-3722, 140-5236, 140-5591, 140-5746 to a full and effective parking brake assembly. Contains, brackets and calipers and mounting hardware to adapt your existing bracket assembly. Kit use universal parking brake cable kit part number 330-9371.