Saturday, December 10, 2016
Brake Pad Part No: 15J-6443K

Brake Pad Guide Brake Pads Chart

Brake Pads
High-Temperature Racing Pads

Pad#:   7420
Compound:   PolyMatrix J
Wilwood Brake Pad Plate #7420

Wilwood Brake Pad Plate #7420
zoom image
<Go Back>

Call (805) 388-1188

Product Number: 15J-6443K     Price: $263.84
Pad Dimensions
Thickness(in): Area(in²): Volume(in³): Beded:
.80 8.2 4.9 N
Temperature & Friction Ratings
Peak Temperture Rating: Peak Friction Rating:
1300+ F. 0.58
Dust & Noise Ratings
Dust Production Rating: Pad Noise Rating:
N-A N-A

Performance Characteristics
  • Medium-high friction, consistent response.
  • Flat torque curve, less aggressive than A or H compounds
  • Low wear rate
  • Medium-high friction, consistent response.

Vehicle Applications
Driving EnvironmentVehicle Sub-TypesApplication Duty
Rally Heavy Duty
Road Race Heavy Duty
Late Model Asphalt ASA, All Pro, SW Tour, etc...Heavy Duty
Stock Cars NASCAR, BGN, CTS, ARCA, etc... Heavy Duty
Late Model Dirt STARS, UMP, IMCA, etc...Heavy Duty
Northeast Modified Dirt or PavementHeavy Duty
Open Wheel Sprint, Midget, etc… Dirt or PavementHeavy Duty
Off Road Heavy Duty

Pad Illustration and Dimensions
Wilwood Brake Pad Plate #7420 Large Drawing

Wilwood Brake Pad Plate #7420 Large Drawing


Compound Characteristics
PolyMatrix J

PolyMatrix J


Compound Data Sheet
Application:

  • Race ONLY compound endurance road racing and super-speedways with iron rotors.
  • Fast intermediate ovals requiring less aggressive brake response.
  • Popular "tuning" compound to reduce bias against A, B, or H compounds when additional hydraulic adjustments are not available.
Characteristics:

  • Gradual rise from to medium torque as temperature increases.
  • Long wear and high temperature fade resistance.
  • Tuning pad for reduced response in medium to high temperature ranges.
  • Compatible with all iron and steel alloy rotors.
Compound Temperature Range & Torque Values
Temperature range and overall friction value are the primary considerations for pad selection. The pads must be capable of maintaining the proper amount of friction for stopping power within the temperatures that will be realized on the track during the event. Then, overall wear rate must be considered. For most asphalt and road race applications, compounds in the high temperature ranges over 1000°F range are usually necessary. Dirt track, drag race, and street performance applications usually operate at temperatures between 500° and 1000°F. Keep in mind that these are general ranges, and not absolute values. Many factors and unforeseen influences can affect brake temperatures. The best indicator for pad selection will always be on track performance. If pad fade (friction loss) due to overheating occurs, then improved cooling, a heavier rotor, or a higher temperature range pad may all become necessary.

Wilwood Compatible Calipers: Pad # 7420
Billet Superlite 4 Lug Mount
Wilwood Billet Superlite 4 Lug Mount Caliper

Wilwood Billet Superlite 4 Lug Mount Caliper
zoom image
Billet Superlite 4 Lug Mount Caliper

The billet SL4 caliper incorporates Wilwood's latest technology in a conventional 3.50" centered lug mount design, with weights starting at 4.94 pounds. This caliper series has been structurally designed for high clamping efficiency and low deflection in a body width compatible with all wide 5 and 5 x 5 style hubs. It is a direct replacement for all other Superlite style calipers. View Billet Superlite 4 Lug Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 5.18 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 4 Lug Mount-ST
Wilwood Billet Superlite 4 Lug Mount-ST Caliper

Wilwood Billet Superlite 4 Lug Mount-ST Caliper
zoom image
Billet Superlite 4 Lug Mount-ST Caliper

The billet SL4/ST caliper incorporates Wilwood's latest technology in a conventional 3.50" centered lug mount design, with weights starting at 4.94 pounds. This caliper series has been structurally designed for high clamping efficiency and low deflection in a body width compatible with all wide 5 and 5 x 5 style hubs. It is a direct replacement for all other Superlite style calipers. View Billet Superlite 4 Lug Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 5.18 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 4R Radial Mount
Wilwood Billet Superlite 4R Radial Mount Caliper

Wilwood Billet Superlite 4R Radial Mount Caliper
zoom image
Billet Superlite 4R Radial Mount Caliper

The Billet SL4R series adds the versatility and convenience of radial mounting to this widely popular caliper group. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. The key to the superior performance of the SL4R comes from the extremely durable and efficient body design. Starting at 4.84 pounds it is the product of computer generated solid modeling and FEA stress analysis technology. Full length stiffening ribs and a reinforced radial transition from the piston bore housings to the closed end bridges has produced the strongest SL caliper bodies ever built. View Billet Superlite 4R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 4.12 4.84 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 4R Radial Mount
Wilwood Billet Superlite 4R Radial Mount Caliper

Wilwood Billet Superlite 4R Radial Mount Caliper
zoom image
Billet Superlite 4R Radial Mount Caliper

This specially configured Superlite SL4R narrow body caliper features an increased bridge radius to allow proper pad alignment and bridge clearance for use with 13.00" to 14.00" diameter rotors. A special body design is used with 16mm pads to provide the narrowest possible profile for tight clearance applications. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. View Billet Superlite 4R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 2.22 2.49 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.28 13.06
Billet Superlite 4R Radial Mount-ST
Wilwood Billet Superlite 4R Radial Mount-ST Caliper

Wilwood Billet Superlite 4R Radial Mount-ST Caliper
zoom image
Billet Superlite 4R Radial Mount-ST Caliper

The Billet SL4R series adds the versatility and convenience of radial mounting to this widely popular caliper group. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. The key to the superior performance of the SL4R comes from the extremely durable and efficient body design. Starting at 4.84 pounds it is the product of computer generated solid modeling and FEA stress analysis technology. Full length stiffening ribs and a reinforced radial transition from the piston bore housings to the closed end bridges has produced the strongest SL caliper bodies ever built. View Billet Superlite 4R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 4.84 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 6
Wilwood Billet Superlite 6 Caliper

Wilwood Billet Superlite 6 Caliper
zoom image
Billet Superlite 6 Caliper

The billet SL6 series integrates "Big Brake" style and Wilwood's latest technology into the traditional 3.50" centered lug mount Superlite caliper category. Each caliper is precision CNC machined from high strength billet into three specialized configurations that cover a broad range of competition and sports driving applications. View Billet Superlite 6 Lug Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 6 -W5 Radial Mount
Wilwood Billet Superlite 6 -W5 Radial Mount Caliper

Wilwood Billet Superlite 6 -W5 Radial Mount Caliper
zoom image
Billet Superlite 6 -W5 Radial Mount Caliper

The billet SL6R series adds the versatility and convenience of radial mounting to this widely popular caliper group. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. These calipers integrate "Big Brake" style with Wilwood's latest technology to generate big stopping power in extreme environments over a broad range of vehicle applications. View Billet Superlite 6R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 6 Radial Mount
Wilwood Billet Superlite 6 Radial Mount Caliper

Wilwood Billet Superlite 6 Radial Mount Caliper
zoom image
Billet Superlite 6 Radial Mount Caliper

The billet SL6R series adds the versatility and convenience of radial mounting to this widely popular caliper group. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. These calipers integrate "Big Brake" style with Wilwood's latest technology to generate big stopping power in extreme environments over a broad range of vehicle applications. View Billet Superlite 6R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 6 ST
Wilwood Billet Superlite 6 ST Caliper

Wilwood Billet Superlite 6 ST Caliper
zoom image
Billet Superlite 6 ST Caliper

The billet SL6 series integrates "Big Brake" style and Wilwood's latest technology into the traditional 3.50" centered lug mount Superlite caliper category. Each caliper is precision CNC machined from high strength billet into three specialized configurations that cover a broad range of competition and sports driving applications. View Billet Superlite 6 Lug Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 6 ST Radial Mount
Wilwood Billet Superlite 6 ST Radial Mount Caliper

Wilwood Billet Superlite 6 ST Radial Mount Caliper
zoom image
Billet Superlite 6 ST Radial Mount Caliper

The billet SL6R series adds the versatility and convenience of radial mounting to this widely popular caliper group. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. These calipers integrate "Big Brake" style with Wilwood's latest technology to generate big stopping power in extreme environments over a broad range of vehicle applications. View Billet Superlite 6R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 6 ST-W5
Wilwood Billet Superlite 6 ST-W5 Caliper

Wilwood Billet Superlite 6 ST-W5 Caliper
zoom image
Billet Superlite 6 ST-W5 Caliper

The billet SL6 series integrates "Big Brake" style and Wilwood's latest technology into the traditional 3.50" centered lug mount Superlite caliper category. Each caliper is precision CNC machined from high strength billet into three specialized configurations that cover a broad range of competition and sports driving applications. View Billet Superlite 6 Lug Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 6 ST-W5 Radial Mount
Wilwood Billet Superlite 6 ST-W5 Radial Mount Caliper

Wilwood Billet Superlite 6 ST-W5 Radial Mount Caliper
zoom image
Billet Superlite 6 ST-W5 Radial Mount Caliper

The billet SL6R series adds the versatility and convenience of radial mounting to this widely popular caliper group. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. These calipers integrate "Big Brake" style with Wilwood's latest technology to generate big stopping power in extreme environments over a broad range of vehicle applications. View Billet Superlite 6R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Billet Superlite 6-W5
Wilwood Billet Superlite 6-W5 Caliper

Wilwood Billet Superlite 6-W5 Caliper
zoom image
Billet Superlite 6-W5 Caliper

The billet SL6 series integrates "Big Brake" style and Wilwood's latest technology into the traditional 3.50" centered lug mount Superlite caliper category. Each caliper is precision CNC machined from high strength billet into three specialized configurations that cover a broad range of competition and sports driving applications. View Billet Superlite 6 Lug Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Forged Superlite
Wilwood Forged Superlite Caliper

Wilwood Forged Superlite Caliper
zoom image
Forged Superlite Caliper

The Superlite caliper series has set the standard for many years in short track, late model, modified and open wheel competition. It has also enjoyed prominence in a variety of road-race, off-road, rally and sport driving applications. Starting at 4.40 pounds, the Forged Billet Superlite (FSL) is the newest innovation to this series from Wilwood. New and adaptive technologies have been applied providing substantial improvements in strength, fluid volume displacement, and overall performance. View Forged Superlite Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 1.98 5.18 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Forged Superlite 4 Radial Mount
Wilwood Forged Superlite 4 Radial Mount Caliper

Wilwood Forged Superlite 4 Radial Mount Caliper
zoom image
Forged Superlite 4 Radial Mount Caliper

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. View Forged Superlite 4R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 1.98 5.18 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.35 14
Forged Superlite 4 Radial Mount
Wilwood Forged Superlite 4 Radial Mount Caliper

Wilwood Forged Superlite 4 Radial Mount Caliper
zoom image
Forged Superlite 4 Radial Mount Caliper

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. View Forged Superlite 4R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 5.18 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 0.9 14
Forged Superlite 4 Radial MT-Quick-Silver
Wilwood Forged Superlite 4 Radial MT-Quick-Silver Caliper

Wilwood Forged Superlite 4 Radial MT-Quick-Silver Caliper
zoom image
Forged Superlite 4 Radial MT-Quick-Silver Caliper

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. View Forged Superlite 4R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 4.84 5.18 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.35 14
Forged Superlite 4 Radial MT-Quick-Silver
Wilwood Forged Superlite 4 Radial MT-Quick-Silver Caliper

Wilwood Forged Superlite 4 Radial MT-Quick-Silver Caliper
zoom image
Forged Superlite 4 Radial MT-Quick-Silver Caliper

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. View Forged Superlite 4R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 2.46 4.12 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.35 14
Forged Superlite 6 Radial Mount
Wilwood Forged Superlite 6 Radial Mount Caliper

Wilwood Forged Superlite 6 Radial Mount Caliper
zoom image
Forged Superlite 6 Radial Mount Caliper

The Superlite 6R 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 FSL6R 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 differential bore models to have a left hand and right hand orientation, but no leading or trailing configuration is required. View Forged Superlite 6R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.35 14
Forged Superlite 6 Radial MT-Quick-Silver
Wilwood Forged Superlite 6 Radial MT-Quick-Silver Caliper

Wilwood Forged Superlite 6 Radial MT-Quick-Silver Caliper
zoom image
Forged Superlite 6 Radial MT-Quick-Silver Caliper

FSL6R/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. View Forged Superlite 6R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 4.04 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.35 14
Forged Superlite Internal
Wilwood Forged Superlite Internal Caliper

Wilwood Forged Superlite Internal Caliper
zoom image
Forged Superlite Internal Caliper

The Superlite caliper series is the benchmark in short track, late model, modified and open wheel competition. It also enjoys prominence 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 family of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes, along with any potential problems that could arise from a damaged tube. The transfer tube has been replaced with two additional bleed screw assemblies which allows this group of symmetrical piston bore models to be mounted either right or left in a leading or trailing position. View Forged Superlite Internal Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 1.98 4.80 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Forged Superlite Internal 4
Wilwood Forged Superlite Internal 4 Caliper

Wilwood Forged Superlite Internal 4 Caliper
zoom image
Forged Superlite Internal 4 Caliper

FSLI4 and FSLI4/ST 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 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. 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. View Forged Superlite Internal Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 5.18 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Forged Superlite Internal 4 ST
Wilwood Forged Superlite Internal 4 ST Caliper

Wilwood Forged Superlite Internal 4 ST Caliper
zoom image
Forged Superlite Internal 4 ST Caliper

FSLI4 and FSLI4/ST 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 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. 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. View Forged Superlite Internal Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 5.18 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06
Forged Superlite ST
Wilwood Forged Superlite ST Caliper

Wilwood Forged Superlite ST Caliper
zoom image
Forged Superlite ST Caliper

The Superlite caliper series has set the standard for many years in short track, late model, modified and open wheel competition. It has also enjoyed prominence in a variety of road-race, off-road, rally and sport driving applications. Starting at 4.40 pounds, the Forged Billet Superlite-ST (FSL-ST) is the newest innovation to this series from Wilwood. New and adaptive technologies have been applied providing substantial improvements in strength, fluid volume displacement, and overall performance. View Forged Superlite Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 5.18 8.2
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
4.9 1.38 13.06