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Product details
Wilwood uses an eight-lug rotor drive on this 1.640-inch-offset drag hat. Match the three hub-flange patterns and the separate retention 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: 170-12544
- Material: Aluminum
- Surface finish: Type III Anodize
- Rotor mounting method: Dynamic Lug Mount
- Hat offset: 1.640 inch
- Rotor attachment interface: 8Lug-7.18 inches; drive-lug connection, not a wheel bolt pattern
- 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
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 has over 20 years of brake-parts experience. Send the installed component details if you need help checking this replacement.
