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Product details
The straight 40-vane core makes this GT rotor non-directional, while its eight internal drive lugs establish a specific mounting interface. At 11.75 x 0.81 inches, it is the thinner Spec-37 option for a compatible snap-ring retained assembly. Wilwood’s calipers, rotors, master cylinders, valves, fittings and lines support complete disc brake systems rather than an isolated component choice. Founded in 1977 by Bill Wood and based in Camarillo, California, the company designs and manufactures these systems for motorsport, street performance and specialized applications. Correct pairing of the rotor with its surrounding hardware is essential.
Technical Details
- Manufacturer part number: 160-16923
- Quantity: One rotor; not an axle pair
- Outside diameter: 11.75 inches
- Nominal thickness: 0.81 inches
- Rotor material: Spec-37 Iron
- Construction: 40 vanes
- Friction surface: GT Slotted
- Finish: Plain
- Approximate weight: 9.80 lb
- Factory burnished: No
- Installation orientation: Non-directional
- Rotor attachment pattern: 8 x 7.18 inches, lug/snap-ring mount
- Registration / lug inside diameter: 6.53 inches
- Far-side inside diameter: 8.00 inches
- Intended use and restrictions: Suitable for high-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 7.18-inch lug circle and 6.53-inch registration diameter. The rotor cannot be fitted to a conventional eight-bolt hat simply because the number of attachment points is the same.
Wilwood product specifications
Put PMB Performance’s 20-plus years of brake knowledge to work when matching this part to your build. We can help review the dimensions and application requirements.
