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Product details
Six rotor bolts on a 6.25-inch circle fit this Wilwood Honda front drag hat. Match the 0.660-inch offset and 2.53-inch hub register. Founded by Bill Wood in 1977, Wilwood Engineering designs and manufactures disc brake systems from Camarillo, California. Its calipers, brake rotors, master cylinders, valves, fittings and brake lines serve motorsport, street-performance and specialized applications. Individual components must be selected for the complete brake system.
Technical Details
- Manufacturer part number: 170-8643
- 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
- Component: Drag Brake Rotor Hat
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Front
- Hat offset: 0.660 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: 2.53 inches
- Rotor mounting hole/thread designation: 5/16-18
- Internal clearance diameter: 5.10 inches
Fitment & Compatibility
Use the six-on-6.25-inch rotor circle to identify the ring required for this Honda front drag hat. That rotor attachment is separate from the four-on-3.93-inch hub-side holes. Check the 0.660-inch offset, 0.32-inch face and 2.53-inch register as a mounting stack, then verify the caliper position in the specified conversion.
Manufacturer Reference
Wilwood component specifications and dimensions
With more than 20 years of parts and fitment experience, PMB Performance can help compare the existing brake assembly with the required component.
