Wilwood 120-16510 D11 4-Piston Disc Brake Caliper

The Wilwood D11 4-piston disc brake caliper is a high-performance direct bolt-on replacement for original equipment Kelsey-Hayes calipers on 1965-67 Ford Mustang, Fairlane, Ranchero, Falcon, Comet, and Mercury Cougar models. Engineered to eliminate the common failures of OE calipers, this caliper features a forged billet aluminum body, internal fluid crossover, stainless steel pistons, and high-temperature seals that end the rust, leaking, bore pitting, and seal degradation that plague factory designs.

Key Features:

• Forged billet aluminum construction for superior strength and corrosion resistance
• Four-piston design with stainless steel pistons for consistent braking performance
• Internal fluid crossover simplifies installation and reduces potential leak points
• High-temperature seals withstand extreme braking conditions
• Mounts in stock location using original brackets and rotors
• Compatible with OE-style D11 brake pads
• Fits inside most production steel wheels and later model alloy wheels
• Same overall piston volume as original calipers maintains proper brake bias
• 1/8"-27 NPT inlet fitting (requires compatible brake line)

Installation is straightforward with no modifications required to the master cylinder or brake bias. The only change needed is a new flexline with a 1/8"-27 NPT end to match the aluminum caliper body. This caliper provides a reliable upgrade path for classic Ford owners seeking improved durability and performance without the complexity of a complete brake system overhaul.