Characteristics of the pad include very aggressive initial response, ultimate high friction, and immediate low temperature response.
The medium-low wear rate occurs during sustained high heat braking, and high heat fade resistance is present.
Applications for the pad are racing only - not for street use, including road course, oval pavement, and dirt in all classes.
Rotor materials include steel and iron.
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 visualizations 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.
Grand National GN6R calipers bring current state-of-the-art design, materials, and manufacturing technology to this long-standing icon in the Wilwood caliper line.
With a high-strength forged aluminum body in either hard-anodized or Quick-Silver nickel plate finish, it is compatible with rotors from 1.25” to 1.38” thickness and diameters from 12.19” to 13.06”.
Two body widths are available for use with .80” (20.3) or .99” (25.0) thick pads.
Stainless steel pistons are included in the base model GN6R anodized calipers and Thermlock pistons in the GN6R/ST Quick-Silver nickel plate models.
It uses 3.5” or 6.0” center mount bracket kits to replace all previous Grand National caliper models.
View Grand National GN6R Calipers.
