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Product details
The red right-hand MC4 supplies a separate mechanical parking function alongside a hydraulic service brake. It is the 0.81-inch nominal rotor-width configuration with a 4.75-inch mounting bracket. A return-sprung cable lever drives the booted 1.19-inch piston, and the caliper comes with parking pads and their noise shields. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company makes disc brake systems and components for motorsport, street-performance and specialized uses, including calipers, brake rotors, master cylinders, valves, fittings and brake lines; each component must match the requirements of the complete brake system.
Technical Details
- Manufacturer part number: 120-18266-RD
- Caliper type: MC4 Mechanical
- Construction: Cast Aluminium
- Finish: Red Powder Coat
- Piston bores: 1.19 inches
- Piston type: Aluminum
- Mechanically driven piston count: 1
- Dust boots: Yes
- Nominal rotor width: 0.81 inch
- Rotor thickness limits: 0.70–0.81 inches
- Rotor diameter limits: 11.00–14.00 inches
- Mounting style: Floating
- Mounting side: Right Hand
- Mounting centers: 4.75 inches
- Mounting-hole size: 0.67 inch
- Actuation: Cable-operated parking mechanism; no hydraulic inlet
- Required pad shape: 6407
- Published pad area: 1.7 square inches
- Published pad volume: 0.26 cubic inches
- Manufacturer-listed component weight: 3.3 lb
- Supplied components: Individual caliper, parking pads with noise shields and steel mounting bracket
- Cable interface: 0.310-inch-diameter barrel end; confirm cable travel and routing
Fitment & Compatibility
Measure the actual rotor against the 0.70–0.81-inch limits before choosing this unit. The mounting bracket must place the pads on the correct friction track without restricting sliding movement. Match cable termination and travel to the right-hand lever arrangement, and verify that the wheel and axle components leave room for both the caliper and cable.
With over 20 years of parts experience, PMB Performance can help compare this component with your existing brake assembly. Include its caliper reference and any conversion-kit information.
Brake-pad warning: Cancer and Reproductive Harm. www.P65Warnings.ca.gov. This warning applies to the brake pads.
