Wilwood Race-Drilled Ultralite Rotor, 11.75 x 1.25 Inches

SKU: 160-5864

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Product details

This race-drilled Ultralite rotor uses the thicker 1.25-inch section within an 11.75-inch outside diameter. The heavily drilled iron faces and 32-vane core are specified for a restricted dirt-racing application, with a 7.70-lb listed weight. Bill Wood established Wilwood in 1977. From Camarillo, California, the company designs and manufactures disc brake systems covering motorsport, street performance and specialized applications, with calipers, rotors, master cylinders, valves, fittings and lines in its product range. This rotor should be selected with the mounting arrangement, friction compound and hydraulic system in mind.

Technical Details

  • Manufacturer part number: 160-5864
  • Quantity: One rotor; not an axle pair
  • Outside diameter: 11.75 inches
  • Nominal thickness: 1.25 inches
  • Rotor material: Iron
  • Construction: 32 vanes
  • Friction surface: Race Drilled
  • Finish: Plain
  • Approximate weight: 7.70 lb
  • Factory burnished: No
  • Dynamically balanced: No
  • Installation orientation: Non-directional
  • Rotor attachment pattern: 8 x 7.00 inches
  • Rotor mounting hole / thread: 0.326 inches
  • Registration / lug inside diameter: 6.38 inches
  • Far-side inside diameter: 8.34 inches
  • Intended use and restrictions: For light to moderate dirt racing. Race-drilled rotors are unsafe for street use and can fail if misused.

The hat or hub, fasteners, caliper and pads are not included.

Fitment & Compatibility

Race-drilled rotors are unsafe for street use and can fail if misused. Check the eight-hole 7.00-inch carrier and caliper clearance for the full 1.25-inch thickness.

Wilwood product specifications · Rotor dimension diagram

With over 20 years of brake experience, PMB Performance can help you compare the installed assembly with this rotor’s dimensions before ordering.