Wilwood D11 Four Piston Caliper

The Wilwood D11 caliper is a direct bolt-on replacement for the original Kelsey-Hayes calipers used on 1965-67 Ford Mustang, Fairlane, Ranchero, Falcon, Comet, and Mercury Cougar. Designed for enthusiasts seeking improved reliability and performance without modifying their classic, the D11 caliper fits in the stock location using original brackets and rotors.

Key Features

• Forged billet aluminum body for strength and corrosion resistance
• Internal fluid crossover for clean plumbing
• Stainless steel pistons with high-temperature seals to prevent rust, leaking, and bore pitting
• Compatible with factory-style D11 brake pads
• Fits most production steel wheels and many later model alloy wheels
• Uses the same overall piston volume as original calipers—no master cylinder or bias changes required
• Requires new flexline with 1/8”-27 NPT end for aluminum caliper

Specifications

• Piston Count: 4
• Piston Area: 4.12 in²
• Piston Type: Stainless steel
• Dust Boot: No
• Piston Bore: 1.62 in (x2)
• Material: Forged aluminium
• Weight: 6.3 lbs
• Color: Anodize
• Finish: Type III Anodize
• Mount Type: Lug
• Mount Side: Universal
• Mount Center: 7.00 in
• Mount Height: 1.83 in
• Inlet Thread Size: 1/8-27 NPT

Rotor Compatibility

• Rotor Width: 0.94 in (min 0.81 in, max 0.94 in)
• Rotor Diameter: 11.30 in (min/max)

Brake Pad Specifications

• Pad Type: D11
• Total Pad Area: 8.27 in²
• Total Pad Volume: 5.8 in³

Applications

• 1965-1967 Ford Mustang
• 1965-1967 Ford Fairlane
• 1965-1967 Ford Ranchero
• 1965-1967 Ford Falcon
• 1965-1967 Mercury Comet
• 1965-1967 Mercury Cougar

Ideal for classic Ford and Mercury owners who want a modern, reliable caliper upgrade that retains stock appearance and fitment.