Wilwood Superlite Internal 4 Caliper

Universal Fitment

Part #: 120-11138

Overview

The Wilwood Superlite Internal 4 Caliper is a high-performance brake component designed for enthusiasts seeking superior stopping power and heat management. Engineered with advanced features, this caliper is ideal for racing, track days, or high-performance street applications. Its innovative design helps improve brake response, reduce pad taper wear, and enhance overall durability under demanding conditions. Whether you're upgrading your vehicle's braking system or building a dedicated race car, this caliper offers the reliability and performance you need to push your vehicle to its limits.

Key Features

This caliper combines cutting-edge materials and thoughtful engineering to deliver exceptional braking performance. Key features include:

• Differential bore pistons to compensate for mechanical loading and temperature variations across the pad face
• Thermlock pistons in ST models to block heat transfer and reduce operating temperatures
• Precision-machined aluminum construction for lightweight strength and durability
• Compatible with 1.88" / 1.75" pistons for versatile fitment options
• Designed for high-temperature applications with enhanced heat dissipation
• 3.5" mounting flange for straightforward installation

Construction & Design

Built from high-quality aluminum, the Wilwood Superlite Internal 4 Caliper features a robust yet lightweight design optimized for performance. The differential bore pistons are precisely machined to ensure consistent pad wear and response, while the Thermlock pistons in the ST models provide superior heat insulation. The caliper’s compact form factor allows for easy integration into a variety of high-performance braking systems, making it a reliable choice for demanding driving conditions.

Driving Feel & Feedback

This caliper enhances braking response and pedal feel, providing confident modulation during aggressive driving. The differential piston design helps maintain consistent pad contact, resulting in improved brake feel and reduced fade during extended high-temperature use.

Installation & Fitment

Installation requires standard brake mounting procedures, with a 3.5" bolt pattern compatible with many performance rotors. Proper fitment should be verified against your vehicle’s specifications and the caliper’s mounting requirements.

What’s Included

The package includes the caliper body, pistons, and necessary hardware for installation, ready to support your high-performance braking setup.