Wilwood 120-11128 Superlite Forged Caliper, Universal Internal Mount, 4-Piston, Red

Superlite Internal Forged

The Superlite series of calipers is the benchmark in short track, late model, modified, and open wheel competition. It also enjoys a strong reputation in a variety of road race, off-road, rally, and sport driving applications. The new FSLI model series is the latest innovation to this Superlite caliper family. It has been re-engineered with internal fluid ports that eliminate the external fluid transfer tubes, along with any potential problems that could arise from a damaged tube. The transfer tube has been replaced by two additional bleed screw assemblies, allowing this symmetrical piston bore model group to be mounted in either a right or left-hand, front or rear position.

The most distinguishing feature on this new caliper design is the forging.

Each body is stress-flow forged from premium grade aluminum alloy billets. This process realigns the internal grain structure of the metal to flow within the contour of the caliper body. It eliminates the stresses and interruptions to the internal grain structure that occur when machining straight block. In short, there is no better way to build a stronger aluminum caliper body. The FSL body design is a highly efficient product of computer generated solid modeling technology and stress analysis. Each caliper features closed end bridges with a radial transition to the piston bore housings. The elimination of machined steps and sharp shoulders in this critical area provides a substantial increase in overall body strength and resistance to deflection under load. Center bridge bolts replace cotter pins to provide additional support and quick access with positive retention of the brake pads. Clamp force, structural deflection, and volume displacement testing has proven the superior strength and efficiency of the FSL. Track testing has proven driver satisfaction. In short, more stopping power with less pedal travel. Dust Boot No

Rotor Dimensions

Rotor Width (in)	0.81
Rotor Diameter (in)	13.06

Pad Dimensions

Pad Area (in²)	8.2
Pad Volume (in³)	4.9

Service Rating & Material

Material	Forged Aluminum
Weight (lbs)	5.2

Colors & Finish

Color	Red
Finish	Red Powder Coat

Mounting

Mounting Center (in)	3.50
Mounting Position
Mounting Side	Universal
Mounting Type	Lug

Specifications

Rotor Compatibility

Rotor Width (in)	0.81
Max Rotor Width (in)	0.84
Min Rotor Width (in)	0.75
Max Rotor Diameter (in)	13.06
Min 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
Mounting

Piston Specifications

Piston Dia 1 (in)	1.38
Piston Dia 2 (in)	1.38
Piston Dia 3 (in)
Total Piston Area (in.²)	3.00

Mounting Specifications

Mount Type	Lug
Mounting Side	Universal
Mount Center (in)	3.50
Mount Hole Size (in)	0.45
Mount Height (in)	2.85
Inlet Thread Size	1/8-27 NPT