Wilwood 171-8976 HD Series Disc Brake Rotor Hat - 1.22" Offset

The Wilwood 171-8976 HD Series Fixed Mount Rotor Hat delivers professional-grade performance and durability for custom and competition disc brake applications. Manufactured from premium-grade aluminum alloy, this rotor hat offers exceptional strength while minimizing unsprung weight, making it ideal for racing and high-performance street builds.

Key Features:

• 1.22" offset dimension for precise brake system geometry
• Straight bell construction with flanged rotor mount ring
• Threaded-hole mounting configuration for use with through-hole rotors
• Blank hub pattern for custom axle building and unique applications
• Maximum radial clearance design allows fitment of large calipers inside smaller wheels
• Premium aluminum alloy construction with show-quality finish
• Compatible with Wilwood rotor hardware for secure, vibration-free mounting

The HD Series rotor hat's versatile design makes it suitable for applications ranging from OE four-lug axle shafts to Grand National stock car racing hubs. The blank configuration allows fabricators and race teams to drill custom bolt patterns specific to their axle and wheel requirements. When paired with matching Wilwood rotors and hardware, this hat provides a solid foundation for reliable braking performance in demanding racing and custom applications.