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Product details
This left-side GT rotor combines a plain finish with the slotted working faces of the Spec-37 series. Its 48 curved vanes and 1.25-inch section sit within a 12.88-inch ring designed for a separate twelve-bolt hat. Wilwood began in 1977 with founder Bill Wood and is based in Camarillo, California, where it designs and manufactures disc brake systems. Calipers and rotors sit alongside master cylinders, valves, fittings and lines in a range serving motorsport, street performance and specialized applications. Selecting these parts together is essential to a correctly matched brake installation.
Technical Details
- Manufacturer part number: 160-4565
- 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: Left-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: 160-4564 (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
Verify the 8.25-inch registration diameter and 9.46-inch far-side inside diameter. Use the correct left-hand vane direction when matching the opposite rotor.
Wilwood product specifications · Rotor dimension diagram
PMB Performance has supported brake projects for more than 20 years. Our team can help identify the correct replacement when your caliper, hat or hub configuration needs a closer look.
