Wilwood Forged Superlite 4 Thermlock Piston Radial Mount Brake Calipers

Description

This is a really nice set of Wilwood Superlite 4 Piston Nickel Plated brake calipers.  These calipers are radial mount, for the 1.25" wide brake rotor.  The pistons are all 1 5/8" diameter with the thermlock heat barrier option.  They come with the 3AN brake fittings, and the temperature indicator strip installed on each caliper.  What you see in the pictures is what you will be getting.  They were used for about 2 racing seasons and replaced this winter as part of routine maintenance.  They work perfectly with no issues.  These calipers are Wilwood Part Number 120-15130-N and retail for around 0 each new.  Please see below for more detailed product information.  Thanks for looking at my items and feel free to write with any questions you may have.
120-15130-N - Product Description
Forged Superlite 4 Radial MT-Quick-Silver
FSL4R/ST-QS calipers provide the pad wear performance advantages of differential bore pistons with the option for ultimate heat protection using Thermlock® pistons in the ST models. Differential piston bores compensate for leading-edge mechanical loading and temperature variances across the pad face to reduce pad taper wear in sustained high temperature applications. Thermlock® pistons in the ST-QS models block heat transfer from the pads and reduce temperatures in the caliper, fluid, and seals by up to 25% over standard stainless steel pistons. Featuring Quick-Silver Nickel finish, these are the go-to calipers for all types sustained hard braking on dirt and asphalt ovals and a wide range of off-road, rally and road course applications.
The FSL4R 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 differential bore models to have a left hand and right hand orientation, but no leading or trailing configuration is required. The most noteworthy feature of all the FSL6R 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 FSL6R body is stress-flow forged from a premium grade aluminum alloy billet.
Product Specifications
Rotor Compatibility
Rotor Width (in)
1.25
Maximum Rotor Width (in)
1.35
Minimum Rotor Width (in)
1.15
Maximum Rotor Diameter(in)
14.00
Minimum Rotor Diameter(in)
11.75
Brake Pad Specifications
Brake Pad Type 1
7420
Brake Pad Type 2
N-A
Brake Pad Type 3
N-A
Total Pad Area (in²)
8.2
Total Pad Volume (in³)
4.9
Mount
Piston Specifications
Piston 1 Bore (in)
1.62
Piston 2 Bore (in)
1.62
Piston 3 Bore (in)
Total Piston Area (in²)
4.12
Mounting Specifications
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
Pad Dimensions & Part Numbers
Pad Dimensions for the Forged Superlite 4 Radial MT-Quick-Silver
Mount Dimensions for the Forged Superlite 4 Radial MT-Quick-Silver
Mount Dimensions & Part Numbers
Dimensions for the Forged Superlite 4 Radial MT-Quick-Silver