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Product details
Wilwood's undrilled iron parking hat has a 7.23-inch shoe bore and 1.540-inch offset. Machine the flange only for a verified complete brake assembly. Wilwood Engineering’s work covers the design and manufacture of disc brake systems for motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977 in a business now based in Camarillo, California. Its calipers, master cylinders, brake rotors, brake lines, valves and fittings must be selected around the complete system.
Technical Details
- Manufacturer part number: 171-12138
- Position in the specified brake assembly: Rear
- Hat offset: 1.540 inch
- Rotor attachment interface: 12 x 8.75 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): Blank — flange requires machining
- Center register diameter: 3.06 inches
- Rotor mounting hole/thread designation: 1/4-28
- Parking-shoe bore: 7.23 inches
- Internal clearance diameter: 6.85 inches
- Mounting-face thickness: 0.18 inches
- Manufacturer-listed attachment hardware reference: 230-8217; verify the specific rotor and attachment arrangement before ordering hardware
- Manufacturer installation note: 3.06 " diameter register with counterbore for register ring.
- Component: Parking-Brake Rotor Hat
- Material: Iron
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
Fitment & Compatibility
This is a component for Custom big-brake parking systems, not a complete brake kit. Check the hub location, rotor mounting surface and caliper alignment as a system before ordering. The parking-shoe diameter, anchor arrangement and complete drum-in-hat mechanism must match. A bare hat is not a complete parking-brake assembly.
Manufacturer Reference
Wilwood component specifications and dimensions
PMB Performance brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.
