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Product details
The right-hand GT ring combines a 14-inch slotted surface with a 72-curved-vane Spec-37 core. Its plain finish leaves the casting uncoated, while a twelve-on-8.75-inch flange establishes the separate-hat connection. Founded by Bill Wood in 1977, Wilwood designs and manufactures disc brake systems in Camarillo, California. Its range includes calipers, rotors, master cylinders, valves, fittings and lines for motorsport, street performance and specialized applications. Rotor choice belongs within that complete system: the caliper, pad, mounting hardware and intended duty must work together.
Technical Details
- Manufacturer part number: 160-8398
- Quantity: One rotor; not an axle pair
- Outside diameter: 14.00 inches
- Nominal thickness: 1.25 inches
- Rotor material: Spec-37 Iron
- Construction: 72 curved vanes
- Friction surface: GT Slotted
- Finish: Plain
- Approximate weight: 17.50 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: 10.00 inches
- Opposite-hand companion rotor: 160-8399 (sold separately)
- 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
Check the 10.00-inch far-side inside diameter and 0.251-inch holes. The 1.25-inch ring needs a compatible caliper and is not the thinner 1.10-inch version.
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.
