The Wilwood Narrow Superlite 4R rear disc kit for Big Ford new-style rear axle applications is a forged narrow big‑brake package that adds rear stopping power and a built‑in parking brake. It pairs FNSL4R four‑piston calipers with two‑piece 13" or 14" rotors and BP‑10 pads to provide balanced braking alongside front upgrades. The internal shoe system is concealed for a clean install and strong static parking hold; finish options are available.
Wilwood Narrow Superlite 4R Rear P-Brk Kit 12.88in Big Ford New Style 2.36in Offset