Wilwood Forged Superlite 4R Radial Mount Caliper (120-13232)
Wilwood Forged Superlite 4R Radial Mount Caliper (120-13232)
SKU:120-13232
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The Wilwood Forged Superlite 4R Radial Mount Caliper is a high-performance brake component designed for competitive racing and demanding driving applications. Constructed from forged aluminum, this caliper offers a lightweight yet durable solution for asphalt short track, late model, modified, and open wheel racing. The Superlite 4R series is recognized as a benchmark in racing circles, providing exceptional braking power and heat dissipation. The latest FSL4R model features an innovative internal fluid port design that eliminates external fluid cross-over tubes, reducing weight and simplifying installation. Its advanced engineering ensures consistent, fade-resistant braking performance under extreme conditions, making it ideal for both professional racing and serious enthusiast use.
This radial mount caliper is compatible with a variety of vehicle setups used in asphalt racing, rally, and sport driving. It is suitable for vehicles with specific mounting configurations requiring a radial mount caliper, with fitment details aligning with racing chassis and brake systems. Designed for high-performance track use, it serves as a direct replacement or upgrade for existing brake calipers in race cars and performance vehicles. The kit includes the caliper itself, with mounting hardware, and is intended for use in applications demanding precise, reliable braking. Proper installation and compatibility should be verified based on vehicle specifications and intended use.
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Overview
Overview
Forged Superlite 4R Radial Mount Caliper by Wilwood
The Superlite 4R caliper series is the benchmark in asphalt short track, late model, modified and open wheel competition. It also enjoys prominence in a variety of road-race, rally and sport driving applications.
The new FSL4R model series is the latest innovation to this Superlite family of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes. The transfer tube has been replaced with two additional bleed screw assemblies which allow symmetrical piston bore models to be mounted either right or left in a leading or trailing position. Differential bore models still require left hand and right hand orientation, but no leading or trailing configuration is necessary.
The most noteworthy feature of all the FSL4R caliper models is the exceptional strength and reduced weight of the forging. With assembled weights just at 4.4 pounds, the caliper body design in itself is a product of computer generated solid modeling and stress analysis technology. Each caliper features closed end bridges with a radial transition down to the main body and piston bore housings. The elimination of machined steps and sharp shoulders in this critical area provides a measurable increase in overall body strength and resistance to deflection under load. Every FSL4R body is stress-flow forged from a premium grade aluminum alloy billet.
Features
- Replacement calipers for Wilwood brake kits
- Stainless steel pistons for corrosion resistance
- Optimum brake performance, balance, and heat dissipation
- Improves your vehicle's handling
- Designed for perfect fit and function
- Proudly manufactured in the United States
Applications
- Universal
Specifications
- Rotor Width(In): 1.25
- Maximum Rotor Width(In): 1.35
- Minimum Rotor Width(In): 1.15
- Maximum Rotor Diameter(In): 14
- Minimum Rotor Diameter(In): 11.75
- Brake Pad Type: 7420
- Total Pad Area (in²): 8.2
- Total Pad Volume (in³): 4.9
- Piston 1 Bore(In): 1.25
- Piston 2 Bore(In): 1.25
- Total Piston Area (in²): 2.46
- Mount Type: Radial
- Mount Side: Universal
- Mount Center(In): 5.98
- Mount Hole Size(In): 0.39
- Mount Height(In): 1.63
- Inlet Thread Size: 1/8-27 NPT
What's In The Box?
- 1 - Wilwood FSL4R Caliper
Warranty
- Manufacturer Standard Warranty
