Wilwood 170-12624 Dynamic Bobbin Mount Big Brake Front Hat 0.865" Offset

The Wilwood 170-12624 is a Dynamic Bobbin Mount Big Brake Front Hat designed for high-performance brake system upgrades. Featuring a 0.865" offset, a 5 x 4.50" wheel stud circle, and a 12 x 8.75" rotor bolt circle, this hat is engineered for demanding performance and racing applications.

Wilwood's Dynamic Bobbin Mount system represents a significant advancement in rotor hat design. Unlike conventional fixed-mount hats, this system allows the rotor to move independently of the hat as it expands and contracts through heat cycles. The result is a thermally stress-free mounting interface that keeps rotors flatter, running truer, and performing more consistently under repeated braking.

Key Features:

• Dynamic Bobbin Mount system allows the rotor to float independently of the hat during thermal expansion and contraction
• Eliminates all thermally generated stress at rotor attachment points
• Rotors stay flatter and track truer for improved braking precision
• Consistent brake response and pedal feel throughout the brake heat cycle
• Eliminates pad knock back and rotor drag caused by thermal distortion
• Hat is not distorted by stresses from rotor expansion or shrinkage
• 0.865" hat offset for proper rotor positioning
• Rotor bolt circle: 12 x 8.75"
• Wheel stud circle: 5 x 4.50"

The Wilwood 170-12624 Dynamic Bobbin Mount Hat is the ideal solution for builders seeking superior thermal management in big brake front applications, eliminating the common problems associated with thermally distorted rotors and maintaining consistent braking performance under extreme conditions.