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Product details
A 0.290-inch offset keeps this Wilwood dynamic front hat shallow. Match its bobbin hardware, 2.78-inch register and five-hole hub flange. Established in 1977 by Bill Wood, Camarillo, California-based Wilwood Engineering designs and manufactures disc brake systems. Its master cylinders, calipers, brake rotors, lines, fittings and valves support motorsport, street-performance and specialized applications, with each component selected for its role in the complete brake system.
Technical Details
- Manufacturer part number: 170-13170
- 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: Bobbin
- Internal clearance diameter: 6.90 inches
- Mounting-face thickness: 0.30 inches
- Hub-side hole clearance diameter(s): 0.520 inches; these are clearance dimensions, not wheel-stud thread sizes
- Attachment hardware: Obtain the correct part-specific hardware specification from Wilwood
- Manufacturer installation note: Wheel mounting pad must not be larger than 6.00" to fit into inset area of this hat.
- Component: Dynamic Bobbin-Mount Rotor Hat
- Material: Aluminum
- Surface finish: Type III Anodize
- Rotor mounting method: Dynamic Mount
- Position in the specified brake assembly: Front
- Hat offset: 0.290 inch
- Rotor attachment interface: 12 x 8.75 inches; rotor attachment, separate from the hub flange
Fitment & Compatibility
For Matched dynamic brake systems, compare the replacement with the actual hat and complete brake-kit instructions. A matching flange pattern alone does not establish rotor alignment or caliper clearance. Use the correct dynamic mounting hardware and rotor connection; an ordinary fixed-mount bolt set does not establish the specified floating assembly.
Manufacturer Reference
Wilwood component specifications and dimensions
PMB Performance can help identify the required brake component with over 20 years of parts experience. Send the kit details and original-part measurements.
