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Product details
This aluminum rotor mounts directly outboard on the specified 42-spline, 2.75-inch Sprint Car axle. The drilled 10.20-inch ring is only 0.31 inch thick and carries a Type III hard-anodized finish, making its restricted duty and compatible friction compound critical. 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: 160-3270A
- Quantity: One rotor; not an axle pair
- Outside diameter: 10.20 inches
- Nominal thickness: 0.31 inches
- Rotor material: Aluminum
- Construction: Solid
- Friction surface: Drilled
- Finish: Type III Ano
- Approximate weight: 1.90 lb
- Factory burnished: No
- Dynamically balanced: No
- Installation orientation: Non-directional
- Rotor attachment pattern: 42-tooth spline
- Registration / lug inside diameter: 2.69 inches
- Intended use and restrictions: The product page recommends Purple compound pads; see the compatibility confirmation below. Restricted racing applications only, including dirt Sprint and Midget racing. Unsafe for street use and unsuitable for most forms of racing. Misuse can cause catastrophic failure.
The hat or hub, fasteners, caliper and pads are not included.
Fitment & Compatibility
Special dirt Sprint/Midget racing application only; unsafe for street use and unsuitable for most racing. Misuse can cause catastrophic failure. Confirm the correct axle, brake package and current Wilwood pad recommendation before use.
Pad-compound confirmation: the current rotor page recommends Purple compound, while Wilwood flyer FL506 specifies PolyMatrix Q for the hard-anodized aluminum rotors. Obtain Wilwood’s current recommendation for the exact rotor and caliper before selecting pads; these references should not be treated as interchangeable approvals.
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.
