Monday, December 05, 2016
Brake Pad Part No: 15Q-6879K

Brake Pad Guide Brake Pads Chart

Brake Pads
Street Performance / Racing Pads

Pad#:   7520
Compound:   PolyMatrix Q
Wilwood Brake Pad Plate #7520

Wilwood Brake Pad Plate #7520
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Product Number: 15Q-6879K     Price: $150.17
Pad Dimensions
Thickness(in): Area(in²): Volume(in³): Beded:
.80 11.1 6.9 N
Temperature & Friction Ratings
Peak Temperture Rating: Peak Friction Rating:
700 to 800 F. 0.47
Dust & Noise Ratings
Dust Production Rating: Pad Noise Rating:
Very Low Very Low

Performance Characteristics
  • Medium friction, smooth engagement, low abrasion on iron rotors.
  • Flat torque curve. Can be used with aluminum rotors on Sprint Car applications.
  • Low wear rate at low to medium temperatures
  • Medium friction, smooth engagement, low abrasion on iron rotors.

Vehicle Applications
Driving EnvironmentVehicle Sub-TypesApplication Duty
Junior Dragster Medium Duty
Street Rods  Medium Duty
Street Performance DomesticMedium Duty
Street Performance ImportMedium Duty
Motorcycles Medium Duty
Drag Racing Medium Duty
Off Road Light Duty
Kart Medium Duty
Power Sports ATV, SnowmobileMedium Duty
Industrial Medium Duty

Pad Illustration and Dimensions
Wilwood Brake Pad Plate #7520 Large Drawing

Wilwood Brake Pad Plate #7520 Large Drawing


Compound Characteristics
PolyMatrix Q

PolyMatrix Q


Compound Data Sheet
Application:

  • Sprint cars with aluminum rotors.
  • Disc brake conversions on street rods, muscle cars, custom show cars, and all moderate performance applications where low noise and dust are important.
Characteristics:

  • High performance ceramic based street formula.
  • Lowest dust and noise.
  • Compatible with all types of steel or iron rotors.
  • Aluminum rotors for racing.
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 # 7520
Grand National GN6R
Wilwood Grand National GN6R Caliper

Wilwood Grand National GN6R Caliper
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Grand National GN6R Caliper

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 Quick-Silver nickel plate models. Uses 3.5” or 6.0” center mount bracket kits to replace all previous Grand National caliper models. View Grand National GN6R Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 5.40 11.1
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
6.9 1.38 13.06
Grand National GN6R
Wilwood Grand National GN6R Caliper

Wilwood Grand National GN6R Caliper
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Grand National GN6R Caliper

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 Quick-Silver nickel plate models. Uses 3.5” or 6.0” center mount bracket kits to replace all previous Grand National caliper models. View Grand National GN6R Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 5.40 11.1
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
6.9 1.38 13.06
Grand National III
Wilwood Grand National III Caliper

Wilwood Grand National III Caliper
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Grand National III Caliper

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
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 5.40 11.1
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
6.9 1.38 13.06
Grand National III
Wilwood Grand National III Caliper

Wilwood Grand National III Caliper
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Grand National III Caliper

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
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
6 5.40 11.1
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
6.9 1.38 13.06