Wilwood 170-8405 Big Brake Lid, Short Offset 1.160

Big Brake Hat - Short Offset

GT Series big brake hats with short offset are precision machined from premium aluminum alloys for high strength and minimal weight. These hats feature threaded mounting holes for rotor attachment, compatible with standard through-mount rotors. They can also be used with T-nuts or stands designed for dynamic mount rotors with specially machined slotted holes. When used in conjunction with compatible Wilwood hardware kits, GT hats offer robust and reliable performance under the most demanding conditions. Short offset hats are designed for applications with limited space, with offsets generally less than 1 inch (2.54 cm). They are available for most rotor bolt patterns in a variety of four and five-bolt wheel patterns.

Shallow offset hats are designed for applications with limited space, with offsets generally less than 1 inch (2.54 cm). They are available for most rotor bolt patterns in a variety of four and five-bolt wheel patterns.

Hat Dimensions

Mounting Hole Type
Threaded

Rotor Bolt Circle (in)
8 x 7.00

Hat Offset (in)
1.160

Center Region (in)
2.53

Hat Type

Material
Aluminum

Mounting Style
Fixed Mount

Finish
Black E-Coat

Weight (lb)

1.700

Bolt Circle Dimensions

Hat Bolt Circle 1
4 x 3.93

Hat Bolt Circle 2

Hat Bolt Circle 3

Application Information

Application Note

Honda

Hat Bolt Kit Part Number

230-8390

Additional Hat Dimensions

Rotor Mounting Hole Size (in)

5/16-18

Lug I.D. (in)

Clearance I.D. (in)

5.90

Face Thickness (in)

0.25

Hat Rivet Dia. - BC 1 (in)

0.500

Hat Rivet Dia. - BC 2 (in)

Hat Rivet Dia. - BC 3 (in)