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Product details
Eight drive lugs replace a conventional rotor bolt circle on this Wilwood drag hat. Match 1.590-inch offset and the required retention hardware. 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: 170-12426
- Hub-flange mounting/clearance pattern(s): 5 X 4.50, 5 X 4.75, 5 X 5.00 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 3.06 inches
- Internal clearance diameter: 6.20 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: 300-12561; verify the specific rotor and attachment arrangement before ordering hardware
- Manufacturer installation note: 300-12561 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
- Component: Lug-Drive Drag Rotor Hat
- Material: Aluminum
- Surface finish: Type III Anodize
- Rotor mounting method: Dynamic Lug Mount
- Hat offset: 1.590 inch
- Rotor attachment interface: 8Lug-7.18 inches; drive-lug connection, not a wheel bolt pattern
Fitment & Compatibility
The specified Dynamic drag brake systems must use the same hat geometry and rotor interface. Verify the hub register and offset measurement reference before assembling the brake system. Use the specified lug-drive friction ring and clip/snap-ring retention system. A conventional bolt-on ring is a different attachment arrangement.
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.
