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The Wilwood Narrow Superlite 4R rear disc kit for Big Ford old‑style rear axle applications is a forged, narrow big‑brake package that adds rear braking muscle and a built‑in parking brake. It combines FNSL4R four‑piston calipers, two‑piece 13" or 14" rotors and BP‑10 pads to create balanced braking to match front upgrades. A discreet internal shoe ensures reliable static parking hold, and optional finishes let builders personalize the assembly.
Wilwood Narrow Superlite 4R Rear P-Brk Kit 12.88in Big Ford Old Style 2.36in Offset
