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Sunday, May 19, 2013
Brake Pad Part No: 15H-8122K-B
Brake Pads
High-Temperature Racing Pads

Pad#:   8517
Compound:   PolyMatrix H
Wilwood Brake Pad Plate #8517

Wilwood Brake Pad Plate #8517 zoom image
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Product Number: 15H-8122K-B     Price: $257.25
Pad Dimensions
Thickness(in): Area(in²): Volume(in³): Beded:
.67 9.2 4.5 Y
Temperature & Friction Ratings
Peak Temperture Rating: Peak Friction Rating:
1300+ F. 0.64
Dust & Noise Ratings
Dust Production Rating: Pad Noise Rating:
N-A N-A
Performance Characteristics
  • High friction, smooth intitial response.
  • Steady rise in friction as temperature increases.
  • Low wear rate
  • High friction, smooth intitial 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 #8517 Large Drawing

Wilwood Brake Pad Plate #8517 Large Drawing
Compound Characteristics
PolyMatrix H

PolyMatrix H

Compound Data Sheet
    Application:

  • Race ONLY compound for long wear in sustained high heat on hard braking ovals and road courses.
  • Trail braking or "touch and go" tracks.
  • Endurance applications.
     Characteristics:

  • High friction compound with smooth initial response a steady rise in friction as temperature and pedal pressure increases.
  • Long wear rate for severe duty, sustained high temperature braking.
  • Compatible with iron, steel, and titanium rotors.
  • Performs best when initially bedded on new rotors or used rotors that have only been run with H compound.
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.