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Product details
For the specified Speedway Engineering floater, this Wilwood rear hat uses 1.720-inch offset. Confirm the 3.53-inch register and parking assembly. Wilwood Engineering is a Camarillo, California manufacturer founded by Bill Wood in 1977. Disc brake design and manufacturing extend across calipers, brake rotors, master cylinders, valves, fittings and brake lines. Parts for street-performance, specialized applications and motorsport must be selected to meet the requirements of the complete brake system.
Technical Details
- Manufacturer part number: 170-13905
- Manufacturer-listed attachment hardware reference: 230-8008; verify the specific rotor and attachment arrangement before ordering hardware
- Component: Parking-Brake Rotor Hat
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Rear
- Hat offset: 1.720 inch
- Rotor attachment interface: 12 x 8.75 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): 5 x 4.25 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 3.53 inches
- Rotor mounting hole/thread designation: 1/4-20
- Parking-shoe bore: 7.23 inches
- Internal clearance diameter: 6.85 inches
- Mounting-face thickness: 0.18 inches
- Hub-side hole clearance diameter(s): 0.390 inches; these are clearance dimensions, not wheel-stud thread sizes
Fitment & Compatibility
This is a component for Speedway Engineering floater brake systems, not a complete brake kit. Check the hub location, rotor mounting surface and caliper alignment as a system before ordering. The parking-shoe diameter, anchor arrangement and complete drum-in-hat mechanism must match. A bare hat is not a complete parking-brake assembly.
Manufacturer Reference
Wilwood component specifications and dimensions
Ask PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.
