Wilwood 120-17201-BK Radial Mount Disc Brake Caliper Black - XRS4R 4-Piston

The Wilwood 120-17201-BK is a XRS4R 4-piston radial mount disc brake caliper finished in durable black powder coat. Engineered for high-performance street, road racing, and track applications, the XRS4R caliper delivers exceptional clamping force and consistent pedal feel under demanding conditions.

Key Features:

• 4-piston design for balanced, even clamping force across the rotor surface
• Radial (R) mount configuration for rigid, precise caliper positioning and reduced flex
• Narrow body profile improves wheel clearance and simplifies installation in tight brake packages
• Forged billet aluminum body provides a superior strength-to-weight ratio compared to cast alternatives
• Black powder coat finish for corrosion resistance and long-lasting aesthetics
• Compatible with Wilwood's full range of high-performance brake pads and rotors
• Precision-machined stainless steel pistons protect against corrosion and heat soak

The XRS4R series is part of Wilwood's purpose-built performance brake lineup, designed to meet the rigorous demands of motorsport and high-performance street driving. The radial mount interface allows for precise rotor tracking and is compatible with a wide variety of aftermarket and OEM spindles using standard radial mounting bolt patterns.