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Product details
The left-hand GT ring preserves the wide mounting geometry of the 14.25-inch Spec-37 family. Its black electro-coated casting uses 72 curved vanes and a 1.25-inch friction section, with slots rather than cross-drilling on the pad faces. Camarillo, California is home to Wilwood, founded by Bill Wood in 1977. The company designs and manufactures disc brake systems for motorsport, street performance and specialized applications, supplying rotors, calipers, master cylinders, valves, fittings and lines. Matching the rotor to the complete assembly matters as much as selecting its diameter or surface treatment.
Technical Details
- Manufacturer part number: 160-9788-GTB
- Quantity: One rotor; not an axle pair
- Outside diameter: 14.25 inches
- Nominal thickness: 1.25 inches
- Rotor material: Spec-37 Iron
- Construction: 72 curved vanes
- Friction surface: GT Slotted
- Finish: Black Electro Coat
- Approximate weight: 18.70 lb
- Factory burnished: No
- Dynamically balanced: Yes
- Installation orientation: Left-hand
- Rotor attachment pattern: 12 x 9.19 inches
- Rotor mounting hole / thread: 0.251 inches
- Registration / lug inside diameter: 8.63 inches
- Far-side inside diameter: 10.00 inches
- Opposite-hand companion rotor: 160-9787-GTB (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 9.19-inch attachment circle and the 8.63-inch center register against the existing hat. A smaller thirteen- or fourteen-inch ring is not an interchangeable substitute based on hole count alone.
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.
