Fitment questions?
Call (855) 786-7101 or text (801) 304-3141.
Real people. Real answers.
Product details
A compact twelve-hole flange connects this 12.60-inch GT rotor to its intended carrier. Its right-hand Spec-37 casting combines a 1.25-inch friction section with 48 curved vanes and slotted working faces. Since its founding by Bill Wood in 1977, Wilwood has designed and manufactured disc brake systems from its base in Camarillo, California. Its products span rotors, calipers, master cylinders, valves, fittings and lines for motorsport, street performance and specialized applications. Brake selection should account for the whole installation, including mounting dimensions, friction materials and hydraulic balance.
Technical Details
- Manufacturer part number: 160-8746
- Quantity: One rotor; not an axle pair
- Outside diameter: 12.60 inches
- Nominal thickness: 1.25 inches
- Rotor material: Spec-37 Iron
- Construction: 48 curved vanes
- Friction surface: GT Slotted
- Finish: Plain
- Approximate weight: 15.60 lb
- Factory burnished: No
- Dynamically balanced: Yes
- Installation orientation: Right-hand
- Rotor attachment pattern: 12 x 7.00 inches
- Rotor mounting hole / thread: 0.251 inches
- Registration / lug inside diameter: 6.38 inches
- Far-side inside diameter: 7.69 inches
- Opposite-hand companion rotor: 160-8747 (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
Confirm all twelve 0.251-inch mounting holes and the 6.38-inch registration diameter. An eight-hole rotor on the same nominal circle is a different attachment configuration.
Wilwood product specifications · Rotor dimension diagram
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.
