Wilwood Right Red Hi-Torque EPB Caliper for 1.04–1.10-Inch rotor width

This red right-hand Hi-Torque EPB is sized for a nominal 1.10-inch-wide rotor. A motor-driven piston applies the parking pads in a standalone assembly, while the service brake remains a separate hydraulic function. The exact width range is 1.04–1.10 inches, not the entire range offered across the EPB product family. Based in Camarillo, California, Wilwood Engineering was founded by Bill Wood in 1977. The manufacturer produces disc brake systems and components for motorsport, street-performance and specialized applications, with a range covering calipers, brake rotors, master cylinders, valves, fittings and brake lines. Individual components are chosen to suit the complete brake system.

Technical Details

• Manufacturer part number: 120-18231-RD
• Caliper type: Electric Parking Brake
• Construction: Aluminium / Steel
• Finish: Red Powder Coat
• Piston bores: 1.25 inches
• Piston type: Steel
• Mechanically driven piston count: 1
• Dust boots: No
• Nominal rotor width: 1.10 inch
• Rotor thickness limits: 1.04–1.10 inches
• Rotor diameter limits: 11.00–14.00 inches
• Mounting style: Lug
• Mounting side: Right Hand
• Mounting centers: 4.75 inches
• Mount height: 0.36 inch
• Actuation: Hi-Torque electric parking motor; 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: 5.0 lb

Fitment & Compatibility

Before replacement, compare the motor configuration and mounting drawing with the installed part. Check a rotor diameter within 11.00–14.00 inches, correct pad placement and adequate wheel clearance. The bracket needs the specified lug spacing and lateral offset, and the control electronics must be suitable for this Hi-Torque motor.

PMB Performance brings over 20 years of brake and parts experience to selection questions. Send the existing caliper reference and brake-package details for help checking compatibility.