Brake Pad Part No: 15A-5736K

High-Temperature Racing Pads

Pad#: 7520
Compound: PolyMatrix A
Prod #: 15A-5736K
Price: $267.28
PolyMatrix A
PolyMatrix A Brake Pads and Box
Picture shown is for illustrative purposes only
Pad Dimensions
Thickness(in) .80
Area(in²) 11.1
Volume(in³) 6.9
Bedded N
UPC Number
UPC 889545035483
Dust & Noise Ratings
Dust Production Rating N-A
Pad Noise Rating N-A
WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov
WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov

PolyMatrix A Compound

Pad Characteristics

  • Very aggressive initial response
  • Ultimate high friction pad
  • Immediate low temperature response
  • Medium-low wear rate during sustained high heat braking
  • High heat fade resistance

Pad Applications

  • Racing only - Not for street use
  • Road course
  • Oval pavement
  • Dirt all classes

Rotor Material

  • Steel
  • Iron
PolyMatrix A Performance Stats PolyMatrix A Performance Stats Zoom Image
PolyMatrix A Friction Coefficient and Temperature Values PolyMatrix A Friction Coefficient and Temperature Values Zoom Image

The above friction data (μ) was recorded through braking cycles from 95 mph to 40 mph at a 0.5g deceleration. Snubs were consecutively done until rotor temperature reached 1300°F. This graph represents average data and is for general trend visualisations only comparing Wilwood pads. Chart data should not be used in comparison with other manufacturer's data. Test conditions, variables, and environment can affect test results.

Temperature range and overall friction value are the primary considerations for pad selection. The pads must maintain the proper amount of friction for stopping power within the temperatures that will be realized on the track. Overall wear rate must also be considered. For most asphalt and road race applications, compounds in the high-temperature range over 1000°F 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, improved cooling, a heavier rotor, or a higher temperature range pad may become necessary.

Wilwood Compatible Caliper(s) for Pad #7520

AV6R Radial Mount
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 5.40
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.9
Max Rotor Widths (in) 1.30
Max Rotor Diameters (in) 13.28

AV6R Radial Mount Calipers

AV6R forged aluminum six-piston radial mount calipers bring current state-of-the-art design, materials, and manufacturing technology to this variation of long standing icon in the Wilwood caliper line. With a High-strength forged aluminum body in a hard-anodized finish and Purpose built for rotors with a 1.30” thickness and a special bracket offset. Calipers are available with Stainless Steel or Thermlock® insulated pistons dependent on part number. View AV6R Radial Mount Calipers
AV6R Radial Mount
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 5.06 - 5.40
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.9
Max Rotor Widths (in) 1.30
Max Rotor Diameters (in) 13.28

AV6R Radial Mount Calipers

AV6R forged aluminum six-piston radial mount calipers bring current state-of-the-art design, materials, and manufacturing technology to this variation of long standing icon in the Wilwood caliper line. With a High-strength forged aluminum body in a hard-anodized finish and Purpose built for rotors with a 1.30” thickness and a special bracket offset. Calipers are available with Stainless Steel or Thermlock® insulated pistons dependent on part number. View AV6R Radial Mount Calipers
Grand National GN4R
Caliper Dimensions
Piston Count 4
Piston Area Range (in²) 5.18
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.9
Max Rotor Widths (in) 1.25
Max Rotor Diameters (in) 14.00

Grand National GN4R Calipers

Grand National GN4R forged aluminum four-piston radial mount calipers bring current state-of-the-art design, materials, and manufacturing technology to this long standing icon in the Wilwood caliper line. With a High-strength forged aluminum body in a hard-anodized finish and Purpose built for rotors with a 1.25” thickness and a special bracket offset. Also these calipers come with Thermlock® insulated pistons. View Grand National GN4R Calipers
Grand National GN6R
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 5.40
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.9
Max Rotor Widths (in) 1.38
Max Rotor Diameters (in) 13.06

Grand National GN6R Calipers

Grand National GN6R forged aluminum six-piston radial mount calipers bring current state-of-the-art design, materials, and manufacturing technology to this long standing icon in the Wilwood caliper line. With a High-strength forged aluminum body in a Type III hard-anodized finish and compatible with rotors from 1.25” to 1.38” thickness and diameters from 12.19” to 13.06”. Two body widths are available for use with .80” (20,3) or .99” (25,0) thick pads. Stainless steel pistons are included base model GN6R anodized calipers and Thermlock® pistons in the GN6R/ST models. Uses 3.5” or 6.0” center mount bracket kits to replace all previous Grand National caliper models. View Grand National GN6R Calipers
Grand National GN6R
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 5.40
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.9
Max Rotor Widths (in) 1.38
Max Rotor Diameters (in) 13.06

Grand National GN6R Calipers

Grand National GN6R forged aluminum six-piston radial mount calipers bring current state-of-the-art design, materials, and manufacturing technology to this long standing icon in the Wilwood caliper line. With a High-strength forged aluminum body in a Type III hard-anodized finish and compatible with rotors from 1.25” to 1.38” thickness and diameters from 12.19” to 13.06”. Two body widths are available for use with .80” (20,3) or .99” (25,0) thick pads. Stainless steel pistons are included base model GN6R anodized calipers and Thermlock® pistons in the GN6R/ST models. Uses 3.5” or 6.0” center mount bracket kits to replace all previous Grand National caliper models. View Grand National GN6R Calipers
Grand National GN6R
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 5.40
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.9
Max Rotor Widths (in) 1.38
Max Rotor Diameters (in) 13.06

Grand National GN6R Calipers

Grand National GN6R forged aluminum six-piston radial mount calipers bring current state-of-the-art design, materials, and manufacturing technology to this long standing icon in the Wilwood caliper line. With a High-strength forged aluminum body in either hard-anodized or Quick-Silver nickel plate finish and Compatible with rotors from 1.25” to 1.38” thickness and diameters from 12.19” to 13.06”. Two body widths are available for use with .80” (20,3) or .99” (25,0) thick pads. Stainless steel pistons are included base model GN6R anodized calipers and Thermlock® pistons in the GN6R/ST models. Uses 3.5” or 6.0” center mount bracket kits to replace all previous Grand National caliper models. View Grand National GN6R Calipers
Grand National III
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 5.40
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.9
Max Rotor Widths (in) 1.38
Max Rotor Diameters (in) 13.06

Grand National III Calipers

Wilwood’s GN lll is a time proven caliper that has been widely used with 5 on 5 hubs for stock car, road course, and off-road competition. The 3.50" mount configuration (also available in 6.00” mount) incorporates this legacy of enduring performance, with options available for the latest brake system heat management technology. View Grand National Calipers
Grand National III
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 5.40
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.9
Max Rotor Widths (in) 1.38
Max Rotor Diameters (in) 13.06

Grand National III Calipers

Wilwood’s GN lll is a time proven caliper that has been widely used with 5 on 5 hubs for stock car, road course, and off-road competition. The 6.00" mount configuration (also available in 3.50” mount) incorporates this legacy of enduring performance, with options available for the latest brake system heat management technology. View Grand National Calipers

 
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Version: 3.05 June 23, 2023