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Product details
Rear Fiesta drag conversions require the matching 1.180-inch-offset Wilwood hat. Verify hub clearance and the 8 x 7.00-inch rotor interface. 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: 170-11903
- Rotor attachment interface: 8 x 7.00 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): 4 x 4.25 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 3.06 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): 0.520 inches; these are clearance dimensions, not wheel-stud thread sizes
- Manufacturer-listed attachment hardware reference: 230-12120; verify the specific rotor and attachment arrangement before ordering hardware
- Manufacturer installation note: 3.06 " diameter register with counterbore for register ring.
- Component: Drag Brake Rotor Hat
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Rear
- Hat offset: 1.180 inch
Fitment & Compatibility
Match this component to the documented Ford Fiesta brake conversions. Confirm the mounting stack, center location and rotor hardware; vehicle model alone does not establish compatibility with a modified brake system. 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.
