Auto Barn
Est. 1957
Wilwood

Wilwood Hat-BB Front 1.00in Offset 5 x 4.72in - 12 on 8.75in

$246.99

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Wilwood GT Series aluminum brake rotor hat. 1.00in offset, 5 x 4.72in bolt circle, 12in rotor diameter. Part# 170-12940.

Key Features

  • Precision machined from aluminum alloy for high strength and minimized weight.
  • Features threaded rotor mount holes for use with standard through-hole mount rotors.
  • Flared bell design is generally used with rotor mount bolt circles of 8.38" and larger.
  • This hat has a 1.00-inch offset and is designed for a 12-inch rotor diameter.
  • The bolt circle pattern is 5 x 4.72 inches.
  • Provides solid, reliable performance when used with matched Wilwood rotor hardware kits.
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About this part

Product Details

Starting with a 1.00-inch offset and a 5 x 4.72-inch bolt circle, these Wilwood GT Series Big Brake Flared Bell hats are precision machined from strong aluminum alloys. This design choice helps keep weight down while maintaining the strength needed for serious braking systems. They feature threaded rotor mount holes, which means you can use them with standard through-hole mount rotors, or even with T-Nuts or bobbins if you're using specially machined slotted hole dynamic mount rotors.

When paired with the right Wilwood rotor hardware kits, these hats offer solid, reliable performance. The flared bell design is typically used with rotor mount bolt circles of 8.38 inches and larger, and this particular hat is set up for a 12-inch rotor diameter with a 1.00-inch offset. It's a well-built component designed to be a strong foundation for a custom big brake setup.

Specifications

Brand
Wilwood
Manufacturer Part #
170-12940
UPC
889545042054

Frequently Asked Questions

Wilwood Hat-BB Front 1.00in Offset 5 x 4.72in - 12 on 8.75in

$246.99