Wilwood 170-16544 GT Series Flared Bell Park Brake Rotor Hat 5x4.75/5.00 1.23in Offset

The Wilwood 170-16544 is a GT Series Big Brake Flared Bell Park Brake Rotor Hat precision machined from premium aluminum alloy for an ideal combination of high strength and minimized weight. Designed for use with a 12 × 8.75" rotor bolt circle and a 5 × 4.75/5.00 wheel bolt pattern, this hat features a 1.23" offset to properly position large-diameter rotors in big brake applications.

This park brake hat is engineered to allow the use of bolt-on rotors on vehicles equipped with OEM internal shoe parking brake assemblies, making it an essential component for custom big brake conversions that must retain factory parking brake functionality.

Key Features:

• GT Series Flared Bell construction — designed for rotor mount bolt circles of 8.38" and larger
• Threaded rotor mount holes for use with standard through-hole mount rotors
• Compatible with T-Nuts or bobbins for use with specially machined slotted-hole dynamic mount rotors
• Precision machined from premium aluminum alloy for high strength and low weight
• 1.23" offset on a 12 × 8.75" bolt circle with 5 × 4.75/5.00 wheel bolt pattern
• Designed for use with GT 1.25" thick × 14.00" diameter rotors
• Compatible with Wilwood rotor hardware kits for complete, reliable assembly

When paired with matched Wilwood rotor hardware kits, the 170-16544 hat delivers solid, dependable performance in the most demanding street and competition environments. Flared Bell Hats in this series support rotor diameters of 12.19" and up with offsets ranging from 1.88" to 3.00" across the broader product family.