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Product details
The integrated hub carries the wheel studs and vented friction ring in a single iron assembly. This 11.88 x 1.29-inch configuration is used in specified early GM front conversions and requires the matching spindle, bearings and brake brackets. For this rotor, the manufacturer is Wilwood Engineering, founded in 1977 by Bill Wood and based in Camarillo, California. Wilwood designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines. Its motorsport, street-performance and specialized products are selected to satisfy the complete brake system's requirements.
Technical Details
- Manufacturer part number: 160-12320
- Rotor size: 11.88 inches diameter x 1.29 inches wide
- Rotor material: Iron
- Face and finish: Plain Face; Plain
- Vanes: Vented
- Mounting direction: Non-directional
- Factory condition: Factory burnished no; balanced no
- Hub wheel-stud pattern: 5 x 5.00 inches
- Wheel-stud nominal diameter: 0.5 inches
- Far-side inside diameter: 7.83 inches
- Approximate component weight: 27.70 lb
- Quantity: one integrated hub-and-rotor component; the complete brake conversion, calipers, pads and bearings are not supplied as a kit
Fitment & Compatibility
For specified early GM/Buick/Cadillac front brake conversions, including the 1957–1960 Cadillac kit documented in DS-1125. It is a replacement hub/rotor component, not a complete conversion for every early GM spindle. Confirm the kit's bearings, seal, bracket and five-on-5.00-inch wheel requirements.
Manufacturer reference: Wilwood rotor specifications, Installation document DS1125
Contact PMB Performance with the rotor and brake-system details for fitment assistance informed by more than 20 years of experience.
