Brake Pad Part No: 150-40-6620K

High-Temperature Racing Pads

Pad#: 6620
Compound: BP-40
Prod #: 150-40-6620K
Price: $279.69
BP-40
BP-40 Brake Pads Plate Type
Pad Dimensions
Thickness(in) .80
Area(in²) 11.1
Volume(in³) 6.6
Bedded N
UPC Number
UPC 889545120806
Dust & Noise Ratings
Dust Production Rating N-A
Pad Noise Rating N-A
WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov
WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov

BP-40 Compound

Pad Characteristics

  • High friction pad with aggressive initial response
  • Good low temperature response
  • Low wear rate during sustained high heat braking
  • Predictable and linear response with excellent modulation
  • High heat fade resistance

Pad Applications

  • Racing only - Not for street use
  • Road course
  • Oval pavement
  • Dirt all classes
  • Off road

Rotor Material

  • Steel
  • Stainless Steel
  • Iron
  • Super Alloy
  • Titanium
BP-40 Performance Stats BP-40 Performance Stats Zoom Image
BP-40 Friction Coefficient and Temperature Values BP-40 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 #6620

Aero4 Radial Mount
Caliper Dimensions
Piston Count 4
Piston Area Range (in²) 4.84
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero4 Radial Mount Calipers

The new Aero4 forged four piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero4 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. View Aero4 Calipers
Aero4 Radial Mount
Caliper Dimensions
Piston Count 4
Piston Area Range (in²) 4.84
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero4 Radial Mount Calipers

The new Aero4-ST forged four piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero4 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. Equipped with Thermlock piston technology and Wilwood’s type III hard anodized finish. Aeo4-ST calipers utilizing the new .80” thick 6620 pad plate, give extra pad life for high heat endurance racing View Aero4 Calipers
Aero4 Radial Mount
Caliper Dimensions
Piston Count 4
Piston Area Range (in²) 4.84
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero4 Radial Mount Calipers

The new Aero4-ST forged four piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero4 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. Equipped with Thermlock piston technology and Wilwood’s type III hard anodized finish. Aeo4-ST calipers utilizing the new .80” thick 6620 pad plate, give extra pad life for high heat endurance racing View Aero4 Calipers
Aero4 Radial Mount
Caliper Dimensions
Piston Count 4
Piston Area Range (in²) 4.17
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero4 Radial Mount Calipers

The new Aero4-ST forged four piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero4 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. Equipped with Thermlock piston technology and Wilwood’s type III hard anodized finish. Aeo4-ST calipers utilizing the new .80” thick 6620 pad plate, give extra pad life for high heat endurance racing View Aero4 Calipers
Aero4 Radial Mount
Caliper Dimensions
Piston Count 4
Piston Area Range (in²) 5.18
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero4 Radial Mount Calipers

The new Aero4-ST Quick-Silver forged four piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero4 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. Equipped with Thermlock piston technology and Wilwood’s Quick-Silver Nickel coating. QS-ST calipers utilizing the new .80” thick 6620 pad plate, give extra pad life for high heat endurance racing View Aero4 Calipers
Aero6 Radial Mount
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 4.04 - 6.52
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero6 Radial Mount Calipers

The new Aero6 forged six piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero4 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. View Aero6 Calipers
Aero6 Radial Mount
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 4.04
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero6 Radial Mount Calipers

The new Aero6-ST forged six piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero4 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. Equipped with Thermlock piston technology and Wilwood’s Type III anodize finish. Aero6-ST calipers utilizing the new .80” thick 6620 pad plate, give extra pad life for high heat endurance racing. View Aero6 Calipers
Aero6 Radial Mount
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 4.04
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero6 Radial Mount Calipers

The new Aero6-ST forged six piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero4 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. Equipped with Thermlock piston technology and Wilwood’s Type III anodize or Quick Silver Nickel coating. Aero6-ST calipers utilizing the new .80” thick 6620 pad plate, give extra pad life for high heat endurance racing. View Aero6 Calipers
Aero6 Radial Mount
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 5.40
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero6 Radial Mount Calipers

The new Aero6-ST Quick-Silver forged six piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero4 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. Equipped with Thermlock piston technology and Wilwood’s Quick-Silver Nickel coating. QS-ST calipers utilizing the new .80” thick 6620 pad plate, give extra pad life for high heat endurance racing. View Aero6 Calipers
Aero6 Radial Mount
Caliper Dimensions
Piston Count 6
Piston Area Range (in²) 5.40
Pad Area Range (in²) 11.1
Pad Volume Range (in³) 6.6
Max Rotor Widths (in) 1.28
Max Rotor Diameters (in) 15.00

Aero6 Radial Mount Calipers

The new Aero6/ST forged six piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, multiple options for piston volume, and a rotor diameter ranging from 12.88" to 15.00" give this caliper the versatility necessary to suit all types of heavy weight braking requirements. The new Aero6 is the latest innovation to the W4A / W6A series of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes and massive center bridge assembly. Equipped with Thermlock piston technology and Wilwood’s Type III anodize coating. Aero6/ST calipers utilizing the new .80” thick 6620 pad plate, give extra pad life for high heat endurance racing. View Aero6 Calipers

 
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Version: 3.05 June 23, 2023