Wilwood 170-17005 Big Brake Dynamic Lug Drive Disc Brake Rotor Hat

The Wilwood 170-17005 is a Big Brake Dynamic Lug Drive Rotor Hat featuring Wilwood's advanced bolt-free rotor mounting system. Unlike traditional fixed-mount designs, this hat allows the rotor to move independently as it expands and contracts through heat cycles, eliminating all thermally generated stress at the rotor attachment points. The result is a rotor that stays flatter, runs truer, and delivers consistent brake response and pedal feel throughout hard use.

Key Features:

• Bolt-free lug drive mounting system — eliminates rotor bolts entirely for simplified assembly and reduced thermal stress
• Spring-loaded, replaceable stainless steel inserts in each lug-drive slot protect the aluminum hat from wear caused by brake torque loading
• Single large snap-ring rotor retention — makes rotor installation and removal fast and tool-free with no torquing or safety-wiring required
• Thermally isolated rotor attachment — pad knock back, rotor drag, and hat distortion from thermal cycling are all eliminated
• Lightweight stainless alloy rotor disc — additionally drilled to remove unnecessary rotating weight from the driveline
• Precision machined aluminum hat construction — high strength with minimized unsprung and rotating weight
• Eliminates bolt hole misalignment issues when re-installing new rotors on a previously used hat

The 170-17005 is engineered for high-performance street and competition brake systems where thermal management, consistent pedal feel, and ease of rotor service are priorities. The snap-ring retention design makes rotor swaps straightforward, and the replaceable stainless steel lug inserts ensure long-term durability of the aluminum hat body.