Wilwood 170-17083 GT Series Big Brake Flared Bell Disc Brake Rotor Hat

The Wilwood 170-17083 is a GT Series Big Brake Flared Bell rotor hat precision machined from premium aluminum alloy, engineered for high strength while keeping unsprung weight to a minimum. Designed for large-diameter big brake applications, this hat serves as the critical interface between the wheel hub and the brake rotor in high-performance street and competition disc brake systems.

Key Features:

• Premium aluminum alloy construction — delivers high strength with reduced weight for performance-focused builds
• Threaded rotor mount holes — compatible with standard through-hole mount rotors for a solid, secure attachment
• T-Nut and bobbin compatible — threaded holes also accept T-Nuts or bobbins for use with specially machined slotted-hole dynamic mount rotors
• Flared bell design — suited for rotor mount bolt circles of 8.38" and larger
• Wide offset range — offsets from 1.88" to 3.00" accommodate rotor diameters of 12.19" and up
• GT Series platform — engineered for demanding high-performance and racing applications when paired with matched Wilwood rotor hardware kits

When paired with the correct Wilwood rotor hardware kit, the 170-17083 delivers solid, reliable rotor retention under the most demanding braking conditions. This hat is part of Wilwood's extensive lineup of precision rotor hats designed for custom, racing, and high-performance disc brake conversions.