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Product details
This Wilwood rear hat combines 1.320-inch offset with a 2.78-inch register. Match the 7.48-inch parking bore, rotor ring and shoes. From Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and their components. Founded by Bill Wood in 1977, it serves street-performance, motorsport and specialized applications with master cylinders, calipers, brake rotors, valves, fittings and brake lines. All components must suit the requirements of the complete system.
Technical Details
- Manufacturer part number: 170-13908
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Rear
- Hat offset: 1.320 inch
- Rotor attachment interface: 12 x 8.75 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): 5 x 4.75 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 2.78 inches
- Rotor mounting hole/thread designation: 1/4-20
- Parking-shoe bore: 7.48 inches
- Internal clearance diameter: 6.47 inches
- Mounting-face thickness: 0.25 inches
- Hub-side hole clearance diameter(s): 0.520 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: Parking-Brake Rotor Hat
- Material: Aluminum
Fitment & Compatibility
The specified Matched big-brake parking systems must use the same hat geometry and rotor interface. Verify the hub register and offset measurement reference before assembling the brake system. 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
With more than 20 years of parts and fitment experience, PMB Performance can help compare the existing brake assembly with the required component.
