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Product details
This Wilwood front hat combines a 3.00-inch register with 1.200-inch offset. Check the dual-pattern flange and separate twelve-bolt rotor hardware. Since its founding by Bill Wood in 1977, Wilwood Engineering has focused on disc brake system design and manufacturing. Based in Camarillo, California, it offers calipers, rotors, brake lines, master cylinders, fittings and valves for motorsport, street-performance and specialized installations. Choose components to satisfy the requirements of the entire braking system.
Technical Details
- Manufacturer part number: 170-8883
- Rotor attachment interface: 12 x 8.75 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): 5 x 4.50, 5 x 4.75 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 3.00 inches
- Rotor mounting hole/thread designation: 1/4-20
- Internal clearance diameter: 6.96 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: 230-4572; verify the specific rotor and attachment arrangement before ordering hardware
- Manufacturer installation note: Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
- Component: Flared-Bell Brake Rotor Hat
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Front
- Hat offset: 1.200 inch
Fitment & Compatibility
A three-inch center register is required by this particular front hat. Compare that bore with the actual hub and verify the 1.200-inch offset before matching a twelve-bolt ring. Wilwood also provides three countersunk hat-to-hub anchoring positions for its specified hubs; use the mounting screws and rotor fasteners called for by the complete assembly.
Manufacturer Reference
Wilwood component specifications and dimensions
Our team at PMB Performance has over 20 years of parts and fitment experience. The existing component number and brake-system details help us check the match.
