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Product details
This Wilwood front hat has a 4.28-inch register, 2.000-inch offset and 5 x 5.50-inch flange. Match the hub and twelve-bolt rotor ring. Wilwood Engineering has designed and manufactured disc brake systems since Bill Wood founded it in 1977. Its Camarillo, California operation supplies calipers, master cylinders, brake rotors, valves, fittings and lines for specialized, street-performance and motorsport applications. Each component must be chosen to match the complete brake system.
Technical Details
- Manufacturer part number: 170-12680
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Front
- Hat offset: 2.000 inch
- Rotor attachment interface: 12 x 8.75 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): 5 x 5.50 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 4.28 inches
- Rotor mounting hole/thread designation: 1/4-20
- Internal clearance diameter: 6.60 inches
- Mounting-face thickness: 0.25 inches
- Hub-side hole clearance diameter(s): 0.640 inches; these are clearance dimensions, not wheel-stud thread sizes
- Manufacturer-listed attachment hardware reference: 230-8008; verify the specific rotor and attachment arrangement before ordering hardware
- Component: Flared-Bell Brake Rotor Hat
Fitment & Compatibility
Identify the installed brake conversion before choosing this hat for Matched large-register brake conversions. The offset, center register and attachment hardware must agree with the rotor and hub in that assembly. 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
For fitment assistance backed by more than 20 years of experience, share the installed brake configuration with PMB Performance before ordering.
