Wilwood 170-18078 Big Brake Rotor Hat 4x4.50 / 5x4.50 .925 Offset Black

The Wilwood 170-18078 is a black big brake rotor hat (also called a rotor mounting hat or rotor adapter) that mounts a two-piece brake rotor to the hub. It is a precision-machined aluminum alloy hat. It has a threaded-hole design for use with through-hole mount rotors. After machining, it is electro-coated for corrosion resistance.

Key Features:

• Wheel stud patterns: 4 x 4.50 and 5 x 4.50
• Hat offset: 0.925 in
• Center register diameter: 2.69 in (listed as 2.686)
• Wheel stud diameter: 0.500 in
• Rotor I.D. clearance: 7.75 in
• Face thickness: 0.38 in
• Black finish

It suits big brake builds that need a short-offset hat with a four- or five-lug 4.50 in wheel pattern.