Wilwood 170-11187 GT Series Dynamic Drag Rotor Hat Offset Aluminum - 1.635

The Wilwood 170-11187 is a GT Series Dynamic Mount Drag Racing Rotor Hat featuring a 1.635" offset, precision engineered for extreme motorsports competition. Machined from premium-grade aluminum, this hat delivers exceptional strength while minimizing unsprung and rotating weight — critical factors in drag racing performance.

Key Features:

• Dynamic T-Nut Mounting System: Wilwood floating T-nuts allow true dynamic mounting, isolating pad engagement harmonics and accommodating thermal expansion between the hat and rotor during competition
• Compatible Rotor Pattern: Designed for use with standard through-hole mount rotors in an 8 x 7.00" rotor bolt pattern
• Premium Aluminum Construction: Precision CNC-machined from high-grade aluminum for optimal strength-to-weight ratio
• Wide Load-Bearing Surface: T-nut design provides maximum durability and precise rotor alignment under demanding race conditions
• Versatile Application: GT Series Dynamic Mount Hats are available for use with racing hubs, flanged axles, and select OE applications
• 1.635" Hat Offset: Specific offset dimension allows precise caliper and rotor positioning for drag racing setups

The GT Series Dynamic Mount system is Wilwood's most advanced rotor hat platform, specifically developed to handle the thermal cycling and mechanical stress of repeated drag racing passes. The floating T-nut design effectively decouples the aluminum hat from the steel rotor, preventing warping, minimizing brake pedal pulsation, and extending the service life of both components. This hat is part of Wilwood's comprehensive GT Series lineup, offering a wide range of offsets and bolt patterns to suit professional and bracket racing applications alike.