Wilwood 170-12431 Lug Drive Dynamic Brake Rotor Hat

The Wilwood 170-12431 is a Lug Drive Dynamic brake rotor hat that revolutionizes rotor mounting with an innovative bolt-free attachment system. This advanced design allows the rotor to move independently of the hat during thermal expansion and contraction, eliminating all thermally-generated stress at the mounting points.

Key Features:

• Bolt-free Lug Drive system eliminates traditional rotor bolts and allows independent thermal movement
• Spring-loaded stainless steel inserts in each lug-drive slot protect the aluminum hat from wear during brake torque loading
• Single snap-ring retention system makes rotor installation and removal quick and simple
• Eliminates rotor warping, thermal distortion, and bolt hole alignment issues during reinstallation
• Maintains consistent brake response and pedal feel throughout heat cycles
• Prevents pad knock back and rotor drag caused by thermal stress
• Lightweight aluminum construction reduces unsprung and rotating weight
• No torquing or safety wiring of rotor bolts required

This innovative hat design keeps rotors flatter and truer throughout their service life by removing the mechanical constraints that cause warping during heat cycles. The result is improved brake performance, longer rotor life, and simplified maintenance for high-performance and racing applications.