These versions of DPL Pro - Series rear disc kits provides a complete solution for Bronco 76 - 77 rear axles with Big Ford New flange and bearing. (normally OE 11 inch diameter brakes and 3300 GVW.) Forged Billet Dynapro Lug Mount four piston calipers, 12.19 one - piece drumrotors, and high friction pads provide optimized and balanced braking to compliment front big brake upgrades available for Bronco platform. The neatly hidden internal shoe system provides a clean installation with superior static holding power for parking. Optional caliper finishes and rotor designs enable the builder to personalize the style and optimize brake performance for every individual application.