Wilwood 120-17204-Y XRS4R Radial Mount 4-Piston Brake Caliper Yellow

The Wilwood 120-17204-Y is a XRS4R radial mount 4-piston brake caliper finished in Wilwood's signature Competition Yellow powdercoat. Designed for high-performance street and racing applications, the XRS4R caliper is built from a lightweight, high-strength aluminum alloy body engineered for maximum stiffness and minimal deflection under extreme braking loads.

Key Features:

• Radial mount design provides two planes of adjustment for precise rotor alignment and simplified installation
• 4-piston configuration delivers balanced clamping force and consistent, fade-resistant braking performance
• Lightweight aluminum alloy construction reduces unsprung weight while maintaining rigidity
• Thermlock thermal barrier pistons reduce heat transfer to brake fluid for improved braking consistency
• Hard-anodized piston bores with Type III aluminum-oxide ceramic finish for long-term durability
• Single-point bleed technology with low-profile bleed screws for easy, mess-free bleeding
• Competition Yellow powdercoat finish provides corrosion resistance and a distinctive appearance
• Compatible with Wilwood's full range of race and street-performance brake pad compounds

The XRS4R is sold individually and is designed to pair with Wilwood rotors and brake hardware for a complete big brake upgrade. The radial mounting configuration makes it a versatile choice for custom and performance brake system builds.