Description
Wilwood Hat-BB Front .543in Offset 5 x 4.50 - 12 on 8.75in
GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 08:55:13
Features
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Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Wilwood, Wilwood Disc Brakes |
| StreetFX SKU | wil170-9289 |
| SFX Item ID | 4406563 |
| Accounting SKU | wil-170-9289 |
| Manufacturer SKU | 170-9289 |
| Manufacturer UPC | 889545042764 |
| Alternative References | WIL-170-9289 |
Brake Rotor Hat, Fixed Mount, Aluminum, 12 x 8.75 in. Rotor Pattern, 5 x 4.5 in. Bolt Pattern, 0.54 in. Offset
Wilwood GT Series fixed mount rotor hats are precision-machined from premium aluminum alloys for high strength and attention to weight. They feature threaded rotor mount holes for use with specially machined, slotted-hole dynamic mount rotors. Wilwood GT Series fixed mount rotor hats are the perfect choice for your Wilwood brake kits.
| Product Attributes | |
|---|---|
| UPC | 889545042764 |
| Brand | Wilwood Disc Brakes |
| Quantity | Sold individually. |
| Part Type | Brake Rotor Hats |
| Product Line | Wilwood GT Series Fixed Mount Rotor Hats |
| Brake Rotor Hat Type | 1/4-20 in. threaded hole |
| Brake Rotor Hat Color | Black |
| Brake Rotor Hat Material | Aluminum |
| Manufacturer's Part Number | 170-9289 |
| Brake Rotor Hat Bolt Circle | 12 x 8.75 in. |
| Brake Rotor Hat Offset (in.) | 0.54 |
| Brake Rotor Hat Face Thickness (in.) | 0.28 |
| Brake Rotor Hat Stud Hole Diameter (in.) | 0.52 |
Compatibility
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