Wilwood 170-15555 GT Series Flared Bell Disc Brake Rotor Hat

The Wilwood 170-15555 GT Series Flared Bell rotor hat is a precision-machined aluminum brake component designed for high-performance big brake applications. Engineered from premium aluminum alloys, this rotor hat delivers exceptional strength while maintaining minimal weight for optimized performance.

Key Features:

• Precision-machined from high-strength aluminum alloy for durability and weight reduction
• Threaded rotor mount holes compatible with standard through-hole mount rotors
• Works with T-Nuts or bobbins for slotted hole dynamic mount rotors when used with proper hardware
• Flared bell design for use with rotor bolt circles 8.38 inches and larger
• Offset range from 1.88 to 3.00 inches for rotor diameters 12.19 inches and up
• Designed for GT Series Big Brake systems

When paired with matched Wilwood rotor hardware kits, this GT Series hat provides solid, reliable braking performance in the most demanding racing and high-performance conditions. The flared bell configuration ensures proper fitment with larger diameter rotors commonly used in big brake upgrades.