Fitment questions?
Call (855) 786-7101 or text (801) 304-3141.
Real people. Real answers.
Product details
The Backdraft Cobra front Wilwood hat combines a 3.12-inch register with 0.710-inch offset. Confirm the hub-flange and rotor-mounting dimensions. Wilwood Engineering, founded in 1977 by Bill Wood, is based in Camarillo, California. The company designs and manufactures disc brake systems and supplies master cylinders, calipers, brake rotors, valves, fittings and lines for motorsport, street-performance and specialized installations. Select each component around the complete system’s requirements.
Technical Details
- Manufacturer part number: 170-10970
- Mounting-face thickness: 0.25 inches
- Hub-side hole clearance diameter(s): 0.480 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: 0.710 inch
- Rotor attachment interface: 12 x 8.75 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): 5 X 4.72 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 3.12 inches
- Rotor mounting hole/thread designation: 1/4-20
- Internal clearance diameter: 7.49 inches
Fitment & Compatibility
Identify the installed brake conversion before choosing this hat for Backdraft Cobra brake conversions. The offset, center register and attachment hardware must agree with the rotor and hub in that assembly. 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
Contact PMB Performance with the brake-kit identification and measurements for help selecting the part. Our team brings over 20 years of experience.
