Thursday, December 08, 2016
Brake Pad Part No: 15J-10838K

Brake Pad Guide Brake Pads Chart

Brake Pads
High-Temperature Racing Pads

Pad#:   4632
Compound:   PolyMatrix J
Wilwood Brake Pad Plate #4632

Wilwood Brake Pad Plate #4632
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Product Number: 15J-10838K     Price: $768.60
Pad Dimensions
Thickness(in): Area(in²): Volume(in³): Beded:
1.26 14.3 14.4 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

Pad Illustration and Dimensions
Wilwood Brake Pad Plate #4632 Large Drawing

Wilwood Brake Pad Plate #4632 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.