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Product details
This Wilwood Scion front hat has 0.550-inch offset and a four-hole flange. Compare the 3.06-inch register and required twelve-bolt rotor ring. Disc brake system design and manufacturing are Wilwood Engineering’s focus. Bill Wood founded the Camarillo, California company in 1977; its range spans brake rotors, master cylinders, calipers, fittings, valves and brake lines for motorsport, specialized and street-performance applications. The choice of individual components depends on the complete brake system.
Technical Details
- Manufacturer part number: 170-8357
- Manufacturer-listed attachment hardware reference: 230-4572; verify the specific rotor and attachment arrangement before ordering hardware
- Manufacturer installation note: 3.06 " diameter register with counterbore for register ring.
- 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: 0.550 inch
- Rotor attachment interface: 12 x 8.75 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): 4 x 3.93 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 3.06 inches
- Rotor mounting hole/thread designation: 1/4-20
- Internal clearance diameter: 7.49 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
Fitment & Compatibility
The specified Scion brake conversions must use the same hat geometry and rotor interface. Verify the hub register and offset measurement reference before assembling the brake system. Select the rotor and attachment hardware separately for the documented assembly. Follow the installation drawing for engagement and clearance at every mounting point.
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.
