Wilwood 170-17020 Big Brake Dynamic Lug Drive Disc Brake Rotor Hat

The Wilwood 170-17020 is a Big Brake Dynamic Lug Drive rotor hat featuring Wilwood's advanced rotor mounting system that eliminates traditional rotor bolts entirely. The rotor floats independently of the hat, allowing it to expand and contract freely through heat cycles without transferring thermally generated stress to the rotor attachment points. The result is a rotor that stays flatter, runs truer, and delivers consistent brake response and pedal feel throughout extended use.

Key Features:

• Bolt-free Dynamic Lug Drive mounting system — rotors move independently of the hat during thermal expansion and contraction
• Eliminates thermal distortion — no rotor warping, pad knock back, or rotor drag caused by heat-cycle stress
• Spring-loaded, replaceable stainless steel inserts in each lug-drive slot protect the aluminum hat from wear during brake torque loading
• Single large snap-ring rotor retention — simplifies assembly and installation; no torquing or safety wiring of rotor bolts required
• Solves bolt hole alignment issues — thermal distortion problems that complicate reinstalling new rotors on a used hat are fully eliminated
• Drilled stainless alloy disc rotors — additional drilling removes unnecessary rotating weight from the driveline
• Precision-machined aluminum alloy construction for high strength and minimized unsprung weight

The Wilwood 170-17020 Dynamic Lug Drive rotor hat is engineered for high-performance street and competition applications where thermal management, consistent pedal feel, and simplified serviceability are critical priorities.