Wilwood 170-15738 Big Brake Dynamic Lug Drive Rotor Hat

The Wilwood 170-15738 is a high-performance disc brake rotor hat featuring the innovative Big Brake Dynamic Lug Drive system. This advanced rotor mounting system eliminates traditional rotor bolts, allowing the rotor to move independently of the hat as it expands and contracts through heat cycles, effectively removing all thermally generated stress from the rotor attachment points.

Key Features:

• Dynamic Lug Drive system eliminates rotor mounting bolts for stress-free thermal expansion
• Rotors stay flatter and run truer throughout heat cycles
• Maintains consistent brake response and pedal feel
• Eliminates pad knock back and rotor drag
• Prevents hat distortion from thermal stresses
• Spring-loaded replaceable stainless steel inserts protect aluminum hat from wear
• Single large snap-ring retention system for quick rotor installation
• No torquing or safety wiring of rotor bolts required
• Lightweight aluminum construction reduces unsprung weight

The Dynamic Lug Drive design solves common problems associated with thermal distortion, including bolt hole alignment issues when installing new rotors on previously used hats. Spring-loaded stainless steel inserts in each lug-drive slot protect the aluminum hat from loading forces when brake torque is applied, ensuring long-term durability and consistent performance.