Wilwood 170-12985 GT Series Dynamic Mount Drag Brake Rotor Hat

The Wilwood 170-12985 is a GT Series Dynamic Mount Drag Rotor Hat engineered for extreme motorsports competition. Precision machined from premium-grade aluminum alloy, this hat delivers exceptional strength while minimizing unsprung and rotating weight — critical factors in high-performance drag racing and track applications.

Key Features:

• Dynamic T-Nut Mounting System: Wilwood T-nuts float within the hat to provide true dynamic mounting, allowing controlled thermal expansion and contraction between the hat and rotor during hard use
• 8 x 7.00" Rotor Bolt Pattern: Compatible with standard through-hole mount rotors using the 8 x 7.00" rotor mount pattern
• Wide Load-Bearing Surface: The T-nut's wide load-bearing face combined with the straight through-hole rotor mount effectively isolates pad engagement harmonics and manages in-service thermal variation
• Precision Machined Aluminum Construction: High-strength aluminum alloy construction reduces unsprung and rotating mass for improved performance
• Straight Bell Design: Straight bell hat configuration suited for 6.75" and 7.00" rotor mount patterns
• Versatile Compatibility: Available configurations for racing hubs, flanged axles, and select OE applications

The GT Series Dynamic Mount Drag Hat is the preferred choice for racers demanding precision, durability, and consistent braking performance under the thermal stress of competition use. Compatible with Wilwood's matching rotor hardware kits for a complete, race-ready braking solution.