WILWOOD 120-17205-RD Wilwood 120-17205-RD XRS4R 4-Piston Brake Caliper with Red Powder Coat

The Wilwood XRS4R brake caliper, part number 120-17205-RD, is a high-performance four-piston braking component engineered for demanding motorsport and performance applications. Its forged aluminum construction provides a strong, rigid foundation for consistent brake operation while helping reduce unsprung weight compared with heavier caliper designs. The red powder-coated finish adds durable surface protection and a clean, competition-inspired appearance.
The XRS4R is configured for use with a 14-inch outside-diameter rotor that is 1.10 inches thick. Its radial-mount design uses a 5.980-inch mounting specification for secure installation and precise caliper positioning. This configuration is intended for systems requiring dependable braking performance, responsive pedal feel, and compatibility with a substantial performance rotor package. Verify rotor, wheel, bracket, and clearance requirements before installation to ensure the complete braking system is properly matched.
As a Wilwood performance brake component, the XRS4R is suited to builders and enthusiasts seeking reliable hardware for track, racing, and high-performance vehicle applications. The four-piston layout promotes even pad loading and helps deliver stable clamping force across the rotor. Each caliper is supplied with the red powder-coated finish and should be installed by a qualified technician using the correct mounting hardware, brake pads, fluid, and hydraulic components for the intended application. Always follow the vehicle and brake-system manufacturer’s installation and maintenance procedures.

Features:

• Brand: Wilwood

• Part Number: 120-17205-RD

• Caliper Design: XRS4R forged aluminum brake caliper

• Piston Configuration: Four-piston layout for balanced pad loading and consistent clamping force

• Finish: Durable red powder-coat finish

• Rotor Compatibility: Designed for a 14-inch outside-diameter rotor with 1.10-inch thickness

• Mounting Style: Radial mount with a 5.980-inch mounting specification

• Construction: Forged aluminum body designed for strength, rigidity, and reduced unsprung weight

• Application: Suitable for performance, track, and racing brake system builds

• Quantity: One brake caliper