Brake Pad Part No: 150-8939K

Street Performance / Racing Pads

Pad#: D52
Compound: BP-10
Prod #: 150-8939K
Price: $86.13
BP-10
BP-10 Brake Pads Plate Type
Pad Dimensions
Thickness(in) .52 / .58
Area(in²) 10
Volume(in³) 3.9
Bedded N
UPC Number
UPC 889545033380
Dust & Noise Ratings
Dust Production Rating Low
Pad Noise Rating Low
WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov
WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov
NSF Int’l LeafMark certified friction formulation.Compliant with SAE J661 industry standards.

BP-10 Compound

Pad Characteristics

  • Medium friction pad
  • Gradual response, low wear rate on iron rotors
  • Low to medium wear rate at low temperatures
  • Low dust and noise
  • High performance street compound with improved friction, lower wear and lower dust levels than standard replacement pads

Pad Applications

  • Street use okay
  • Street
  • Muscle cars
  • Drag race
  • Light to medium braking on dirt including late models and modified

Rotor Material

  • Steel
  • Iron
BP-10 Performance Stats BP-10 Performance Stats Zoom Image
BP-10 Friction Coefficient and Temperature Values BP-10 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 #D52

D52 Dual Piston Floater
Caliper Dimensions
Piston Count 2
Piston Area Range (in²) 2.46 - 6.28
Pad Area Range (in²) 10
Pad Volume Range (in³) 3.9
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 12.19

D52 Dual Piston Floater Calipers

The D52 caliper is a direct bolt-on 2 piston replacement for the factory original single calipers on many 1968-96 GM Passenger Vehicles and Trucks. Forged billet aluminum bodies, stainless steel pistons, and competition-style high-temperature seals put an end to the rust, bore pitting, and seal failures that plague OE caliper designs. D52 calipers deliver low-maintenance performance and a huge weight savings with high-temperature reliability for the street and track. View GM D52 Dual Piston Calipers
D52-R Single Piston Floater
Caliper Dimensions
Piston Count 1
Piston Area Range (in²) 4.45 - 5.94
Pad Area Range (in²) 10
Pad Volume Range (in³) 3.9
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 12.19

D52-R Single Piston Floater Calipers

Wilwood’s newest race caliper, the D154-R starts with a forged aluminum Type III hard anodized body and a stainless steel piston. The lineup offers a choice of 2.50” or 2.00” pistons, rotor widths from .81” to 1.04”, and up to 12.19” diameter. Caliper fluid inlet port centered directly behind the piston eliminates any interference with slide pins. With a lower deflection rate and higher volumetric efficiency than all the competition’s heavier cast models, D154-R calipers with a 2.50" piston weigh only 3.3 pounds. Our D154-R calipers use standard metric D154 pads and mount with stock height and offset. Calipers do not come with slide pins or vibration dampeners. View D52-R Single Piston Floater Calipers
GM III Single Piston Floater
Caliper Dimensions
Piston Count 1
Piston Area Range (in²) 4.45 - 5.94
Pad Area Range (in²) 10
Pad Volume Range (in³) 3.9
Max Rotor Widths (in) 1.04
Max Rotor Diameters (in) 11.75

GM III Single Piston Floater Calipers

Wilwood’s GMIII caliper represents the latest refinements in caliper design and manufacturing through solid modeling and stress simulation programs. The result is the most rigid, highest torque, lightweight aluminum caliper with weights starting at 3.36 pounds. Requires use of hardened Wilwood slide pins (sold separately), request part no. 230-0619 (slide pin kit) contains 4 slide pins, enough for two calipers View GM Single Piston Calipers
GM III Single Piston Floater
Caliper Dimensions
Piston Count 1
Piston Area Range (in²) 4.45 - 5.94
Pad Area Range (in²) 10
Pad Volume Range (in³) 3.9
Max Rotor Widths (in) 1.25
Max Rotor Diameters (in) 11.75

GM III Single Piston Floater Calipers

Wilwood’s GMIII caliper represents the latest refinements in caliper design and manufacturing through solid modeling and stress simulation programs. The result is the most rigid, highest torque, lightweight aluminum caliper with weights starting at 3.36 pounds. Requires use of hardened Wilwood slide pins (sold separately), request part no. 230-0619 (slide pin kit) contains 4 slide pins, enough for two calipers View GM Single Piston Calipers

 
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Version: 3.05 June 23, 2023