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Product details
This small-bore anodized D154 uses two 1.12-inch stainless pistons and a nominal 1.04-inch rotor-width channel. Its 1.98-square-inch area differs considerably from other D154 piston configurations. This component comes from Wilwood Engineering, established in 1977 by Bill Wood and based in Camarillo, California. Its disc brake design and manufacturing work includes calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized systems.
Technical Details
- Manufacturer part number: 120-11874. Component: D154 Single & Dual Piston Floater caliper.
- Supply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.
- Pad fit is type D154. Match the pad dimensions and compound to the rotor and intended braking conditions.
- Caliper weight: approximately 4.6 lb.
- Piston dust boots: not fitted.
- Bracket interface: 5.46-inch floating centers with 0.69-inch holes. Specified mount height: 0.37 inches; orientation: universal.
- Nominal rotor width 1.04 inch; compatible outside diameter from 11.00 through 12.19 inches. Specified rotor-width limits: 0.87–1.04 inch.
- Construction and surface: forged aluminum housing finished in Type III anodize.
- Bore configuration 1.12 inches across 2 pistons; piston material: stainless steel. Hydraulic effective area: 1.98 square inches.
- Hydraulic inlet thread: M10 x 1.50. Use a fitting with the correct thread and sealing seat.
Fitment & Compatibility
Confirm that the brake system actually requires the small bore and area. Check original-style pad sweep, 5.46-inch metric slide-pin geometry and the banjo hose fitting before selecting a replacement.
For a replacement or custom installation, send PMB Performance the brake dimensions and existing component identification. Our 20+ years of experience can help narrow down the correct combination.
