The Wilwood Narrow Superlite 4R rear disc kit for Bronco Big Ford applications replaces OE drum brakes with a high-efficiency drum-style parking brake assembly, FNSL4R four-piston calipers, and 13" or 14" two-piece rotors. Intended for 1965–1977 Bronco rear axles with Big Ford flange and bearing, the kit boosts braking capacity and complements front big brake upgrades while offering optional finishes and rotor choices for personalized style.
Wilwood Narrow Superlite 4R Rear P-Brk Kit 14.00in Drilled Big Ford 2.36in Off Bronco 5 x 5.50