Wilwood Black Small-Bore D154 Floating Caliper, 0.81-Inch Rotor Width / 1.98-Sq-In Area

This black D154 pairs a thin nominal 0.81-inch rotor-width channel with two 1.12-inch stainless bores. Its 1.98-square-inch effective area defines the small-bore twin-piston hydraulic configuration. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. It designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications.

Technical Details

• Manufacturer part number: 120-11875-BK. 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.
• Compatible brake pad shape: D154; choose the required compound for the brake system.
• Piston dust boots: not fitted.
• Pistons: 2 stainless steel; bore specification: 1.12 inches. Effective piston area: 1.98 sq in.
• Mounting: floating, 5.46-inch centers; universal orientation. Mount holes: 0.69 inch; height: 0.37 inches.
• Caliper weight: approximately 4.6 lb.
• Body: forged aluminum; finish: Black powder coat.
• Hydraulic inlet thread: M10 x 1.50. Use a fitting with the correct thread and sealing seat.
• Rotor compatibility: nominal width 0.81 inch; diameter 11.00–12.19 inches. Specified rotor-width limits: 0.70–0.81 inch.

Fitment & Compatibility

Check the bracket's sliding clearance and D154 pad sweep. The 5.46-inch centers and M10 x 1.50 line thread must agree with the complete GM metric brake assembly.

PMB Performance has over 20 years of brake-component experience. Send the existing caliper identification, rotor measurements and bracket details for help matching this configuration.