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Product details
A 0.210-inch offset places this Wilwood Lancer Evolution front hat close to the hub face. Match the 2.72-inch register and twelve-bolt rotor ring. 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: 170-9558
- Internal clearance diameter: 8.00 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: 230-8008; verify the specific rotor and attachment arrangement before ordering hardware
- Component: Short-Offset Brake Rotor Hat
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Front
- Hat offset: 0.210 inch
- 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 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 2.72 inches
- Rotor mounting hole/thread designation: 1/4-20
Fitment & Compatibility
The shallow 0.210-inch offset is part of the Lancer Evolution front conversion geometry. Seat the hat on the specified 2.72-inch register and compare the hub-side five-hole flange. The outer 12 x 8.75-inch connection carries the rotor ring. Match the exact Wilwood brake package and its caliper bracket rather than substituting another Evo rotor from the vehicle name.
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.
