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Product details
Miata front and rear Wilwood kits use this six-bolt rotor hat in specific packages. Match the 0.750-inch offset and complete assembly reference. Bill Wood founded Wilwood Engineering in 1977, and the manufacturer is based in Camarillo, California. Wilwood designs and manufactures disc brake systems alongside calipers, master cylinders, rotors, fittings, brake lines and valves. The motorsport, street-performance and specialized ranges depend on components selected to work within a complete braking system.
Technical Details
- Manufacturer part number: 170-11682
- Manufacturer installation note: 3.06 " diameter register with counterbore for register ring.
- Component: Short-Offset Brake Rotor Hat
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Front/Rear
- Hat offset: 0.750 inch
- Rotor attachment interface: 6 x 6.25 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): 4 x 3.93 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 3.06 inches
- Rotor mounting hole/thread designation: 5/16-18
- Internal clearance diameter: 5.20 inches
- Mounting-face thickness: 0.32 inches
- Hub-side hole clearance diameter(s): 0.500 inches; these are clearance dimensions, not wheel-stud thread sizes
- Manufacturer-listed attachment hardware reference: 230-12176; verify the specific rotor and attachment arrangement before ordering hardware
Fitment & Compatibility
Wilwood documents this hat in front kit 140-14316 for 1990–2005 Mazda Miata and rear road-race kits 140-17644/17645 for 2001–2005 Miata with Sport Package. Front or rear use depends on that complete kit: compare the hub registration adapter, rotor ring, caliper location and specified fasteners with DS1192 or DS1566. This component does not convert an unrelated brake assembly by itself. Select the rotor and attachment hardware separately for the documented assembly. Follow the installation drawing for engagement and clearance at every mounting point.
Manufacturer Reference
Wilwood component specifications and dimensions · Assembly instructions DS1192 · Assembly instructions DS1566
Ask PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.
