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Product details
The specified Honda front conversion uses this 1.160-inch-offset Wilwood hat. Match the four-hole flange, 2.53-inch register and eight-bolt ring. Founded in 1977 under Bill Wood, Wilwood Engineering operates from Camarillo, California. The company designs and manufactures disc braking systems and components, including calipers, master cylinders, brake rotors, fittings, valves and brake lines. Its motorsport, specialized and street-performance range requires individual parts matched to the complete braking arrangement.
Technical Details
- Manufacturer part number: 170-8405
- Center register diameter: 2.53 inches
- Rotor mounting hole/thread designation: 5/16-18
- Internal clearance diameter: 5.90 inches
- Mounting-face thickness: 0.25 inches
- Hub-side hole clearance diameter(s): 0.500 inches; these are clearance dimensions, not wheel-stud thread sizes
- Manufacturer-listed attachment hardware reference: 230-8390; verify the specific rotor and attachment arrangement before ordering hardware
- 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
- Hat offset: 1.160 inch
- Rotor attachment interface: 8 x 7.00 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
Fitment & Compatibility
Check the existing Honda brake conversions against the dimensions above. The hub flange and rotor attachment are separate interfaces and both must match the intended brake package. 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
Ask PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.
