Tuesday, October 25, 2016
Brake Pad Part No: 15B-8949K

Brake Pad Guide Brake Pads Chart

Brake Pads
High-Temperature Racing Pads

Pad#:   7912
Compound:   PolyMatrix B
Wilwood Brake Pad Plate #7912

Wilwood Brake Pad Plate #7912
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Product Number: 15B-8949K     Price: $141.03
Pad Dimensions
Thickness(in): Area(in²): Volume(in³): Beded:
.49 5 1.8 N
Temperature & Friction Ratings
Peak Temperture Rating: Peak Friction Rating:
1300+ F. 0.62
Dust & Noise Ratings
Dust Production Rating: Pad Noise Rating:

Performance Characteristics
  • Medium-high friction, good cold response
  • Gently rising torque curve, predictable engagemnet
  • Low wear rate at medium temperatures, increasing to moderate at high temperature.
  • Medium-high friction, good cold 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... Medium 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 #7912 Large Drawing

Wilwood Brake Pad Plate #7912 Large Drawing

Compound Characteristics
PolyMatrix B

PolyMatrix B

Compound Data Sheet

  • Race ONLY compound is a value priced, proven workhorse for most weekly category asphalt late models, sprints, modifieds, and sportsman divisions.
  • Hard braking dirt late models, DIRT modifieds, and rear inboard sprint brakes with vented iron or steel rotors.
  • SCCA club racers, rally, and auto-cross.
  • High MPH drag cars if high end fade occurs with lower temperature pads.

  • Traditional favorite for asphalt LM's, modifieds, and sprints.
  • Modifieds, late models, and other hard braking dirt applications.
  • Intermediate weight road course, auto-cross, rally.
  • Beds easily and fully compatible with all iron and steel.
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 # 7912
Powerlite 2R Radial Mount
Wilwood Powerlite 2R Radial Mount Caliper

Wilwood Powerlite 2R Radial Mount Caliper
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Powerlite 2R Radial Mount Caliper

Powerlite PL2R/ST radial mount calipers provide a high strength, lightweight,two-piston option for open wheel, formula car road racing and other similar types of competition, where high clamping efficiency within a limited wheel space and optimized rotor diameter are Required. Designed with Machined billet aluminum body with offset 1.75” piston bores and Common radial stud spacing and mounting offsets. The PL2R series uses Top-loading quick-access type 7912 pads in a variety of compounds. PL2R/ST caliper feature: Nickel plated Quick-Silver body finish with Thermlock pistons. View Powerlite 2R Radial Mount Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
2 2.40 5
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
1.8 0.5 11
Powerlite Radial Mount
Wilwood Powerlite Radial Mount Caliper

Wilwood Powerlite Radial Mount Caliper
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Powerlite Radial Mount Caliper

The Powerlite four piston radial mount caliper starts at 2.26 pounds with a sleek profile, superior strength, lightweight and durable in higher temperature situations. Easily adapted to a wide range of sports, rally, and off road driving applications. View Powerlite Calipers
Caliper Dimensions
Piston Count: Piston Area Range (in²): Pad Area Range (in²):
4 1.58 3.00 5
Pad Volume Range (in³): Max Rotor Widths (in): Max Rotor Diameters (in):
1.8 0.86 11