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Product details
The factory-burnished left GT ring uses the same lightweight 1.21-inch section as its unburnished counterpart. Its eight-bolt flange attaches a separate hat, and the 48 curved vanes establish the required rotational side. The manufacturer is Wilwood Engineering of Camarillo, California, founded by Bill Wood in 1977. It designs and manufactures disc brake systems, supplying calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications. Matching this component requires consideration of the complete brake system.
Technical Details
- Manufacturer part number: 160-13500-B
- Outside diameter / width: 11.75 inches diameter x 1.21 inches wide
- Material specification: Spec-37 Iron
- Friction surface / finish: GT Slotted; Plain
- Ventilation: 48 CV; curved
- Mounting direction: Left-hand
- Preparation: Balanced: yes; factory burnished: yes
- Opposite-side component, ordered separately: 160-13499-B
- Rotor-to-hat/hub attachment circle: 8 x 7.00 inches
- Attachment hole size or thread: 0.316 inches
- Center registration: 6.38 inches
- Far-side inside diameter: 8.34 inches
- Approximate weight: 10.40 lb
- Quantity: one rotor ring; hat, hub, mounting hardware, calipers and pads are separate
Fitment & Compatibility
A factory-burnished left rotor for an 11.75-inch brake with a 1.21-inch working section. Keep the 48 curved vanes correctly oriented and use the eight-on-7.00-inch hat interface with 6.38-inch registration. The preparation treatment does not make a different width or hat pattern interchangeable.
Manufacturer reference: Wilwood rotor specifications
For help identifying the correct replacement, share the installed brake package with PMB Performance. Our team draws on over 20 years of experience with brake components and fitment.
