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Product details
At 10.25 inches, this Ultralite rotor has a smaller working diameter than the otherwise similar 10.50-inch ring. It retains a 0.75-inch vented section and 30 straight vanes, with plain faces and a six-hole attachment flange. Wilwood began in 1977 with founder Bill Wood and is based in Camarillo, California, where it designs and manufactures disc brake systems. Calipers and rotors sit alongside master cylinders, valves, fittings and lines in a range serving motorsport, street performance and specialized applications. Selecting these parts together is essential to a correctly matched brake installation.
Technical Details
- Manufacturer part number: 160-3747
- Quantity: One rotor; not an axle pair
- Outside diameter: 10.25 inches
- Nominal thickness: 0.75 inches
- Rotor material: Iron
- Construction: 30 vanes
- Friction surface: Plain Face
- Finish: Plain
- Approximate weight: 6.10 lb
- Factory burnished: No
- Dynamically balanced: No
- Installation orientation: Non-directional
- Rotor attachment pattern: 6 x 5.50 inches
- Rotor mounting hole / thread: 0.326 inches
- Registration / lug inside diameter: 4.94 inches
- Far-side inside diameter: 6.75 inches
- Intended use and restrictions: Suitable for moderate-temperature racing and street use. Medium-weight castings.
The hat or hub, fasteners, caliper and pads are not included.
Fitment & Compatibility
Match the 5.50-inch rotor connection and the caliper’s required pad sweep. Sharing the 4.94-inch register with another rotor does not establish the correct outside diameter.
Wilwood product specifications · Rotor dimension diagram
PMB Performance brings more than 20 years of brake expertise to component selection. Contact us with your existing rotor and brake-package details if you need help checking the match.
