Wilwood Superlite Internal 4 Caliper

Universal Fitment

Part #: 120-11137

Overview

The Wilwood Superlite Internal 4 Caliper is a high-performance brake component designed for racing and high-demand applications. Engineered for enthusiasts seeking superior stopping power and heat management, this caliper features innovative piston technology to enhance pad wear and thermal performance. Its compact design makes it suitable for a variety of high-performance vehicles, providing reliable braking response under sustained high-temperature conditions. Whether you're upgrading your track car or enhancing your vehicle's braking system, this caliper offers durability and consistent performance for demanding driving environments.

Key Features

This caliper combines advanced materials and thoughtful design to deliver optimal braking performance. Key features include:

• Differential bore pistons to reduce pad taper wear and improve pad life
• Thermlock pistons in ST models to block heat transfer and lower operating temperatures
• Aluminum construction for lightweight strength and heat dissipation
• Precision-machined components for consistent, reliable operation
• Designed for high-temperature durability and long-term performance
• Compatible with 1.88" / 1.75" piston sizes for versatile fitment
• 3.5" mounting width for flexible installation options

Construction & Design

The Wilwood Superlite Internal 4 Caliper features a robust aluminum body with precision-machined internal components. The differential bore pistons are engineered to compensate for mechanical loading and temperature variances, helping to maintain even pad wear and consistent braking feel. The inclusion of Thermlock pistons in the ST models enhances heat resistance, reducing thermal transfer from the pads to the caliper, fluid, and seals, which supports sustained high-performance braking.

Driving Feel & Feedback

This caliper is designed to provide a responsive and predictable braking experience, with improved heat management that helps maintain pedal feel during extended high-performance driving. Its construction ensures consistent response and reduced fade, giving drivers confidence in demanding conditions.

Installation & Fitment

Installation requires standard brake mounting procedures, with compatibility verified against specific vehicle applications. Proper fitment should be confirmed using the part number and vehicle specifications to ensure optimal performance.

What’s Included

The package includes the caliper assembly with differential bore pistons and Thermlock pistons in the ST models, ready for installation. Hardware and mounting brackets are sold separately and should be selected based on your vehicle's configuration.