Fitment questions?
Call (855) 786-7101 or text (801) 304-3141.
Real people. Real answers.
Product details
A 12.88-inch diameter sets this GT ring apart from the nearby 13.06-inch size in the same twelve-bolt family. The right-hand Spec-37 casting is 1.25 inches thick and uses 48 curved vanes behind its slotted faces. Bill Wood established Wilwood in 1977. From Camarillo, California, the company designs and manufactures disc brake systems covering motorsport, street performance and specialized applications, with calipers, rotors, master cylinders, valves, fittings and lines in its product range. This rotor should be selected with the mounting arrangement, friction compound and hydraulic system in mind.
Technical Details
- Manufacturer part number: 160-4564
- Quantity: One rotor; not an axle pair
- Outside diameter: 12.88 inches
- Nominal thickness: 1.25 inches
- Rotor material: Spec-37 Iron
- Construction: 48 curved vanes
- Friction surface: GT Slotted
- Finish: Plain
- Approximate weight: 11.70 lb
- Factory burnished: No
- Dynamically balanced: Yes
- Installation orientation: Right-hand
- Rotor attachment pattern: 12 x 8.75 inches
- Rotor mounting hole / thread: 0.251 inches
- Registration / lug inside diameter: 8.25 inches
- Far-side inside diameter: 9.46 inches
- Opposite-hand companion rotor: 160-4565 (sold separately)
- Intended use and restrictions: Suitable for moderate-temperature racing and street use. Spec-37 heavy-wall castings.
The hat or hub, fasteners, caliper and pads are not included.
Fitment & Compatibility
Match the twelve 0.251-inch attachment holes and 8.25-inch center register. Check the caliper’s sweep against the exact diameter rather than the shared mounting circle alone.
Wilwood product specifications · Rotor dimension diagram
With over 20 years of brake experience, PMB Performance can help you compare the installed assembly with this rotor’s dimensions before ordering.
