Wilwood 170-17861 Lug Drive Dynamic Disc Brake Rotor Hat

The Wilwood 170-17861 is a Lug Drive Dynamic Disc Brake Rotor Hat featuring Wilwood's advanced bolt-free rotor mounting system, engineered for high-performance street and racing applications. Unlike traditional fixed-mount designs, this hat allows the rotor to float and move independently as it expands and contracts through heat cycles, eliminating all thermally generated stress at the rotor attachment points.

Key Features:

• Bolt-free Lug Drive mounting system — eliminates rotor bolts entirely for a cleaner, more reliable installation
• Floating rotor design — rotor expands and contracts independently of the hat, keeping rotors flatter and running truer
• Consistent brake response — pedal feel remains stable by eliminating pad knock-back and rotor drag caused by thermal distortion
• Spring-loaded, replaceable stainless steel inserts in each lug-drive slot protect the aluminum hat from wear generated by brake torque loading
• Single large snap-ring retention — secures the rotor to the hat for fast, simple assembly with no torque specs or safety wiring required
• Drilled stainless alloy disc — additional drilling removes unnecessary rotating weight from the driveline
• Eliminates bolt hole alignment issues associated with re-installing new rotors on a previously used hat
• Precision-machined from premium-grade aluminum alloy for high strength and low unsprung weight

The Wilwood 170-17861 Lug Drive Dynamic rotor hat is ideal for competitors and enthusiasts who demand the highest level of brake system performance and durability. The innovative snap-ring assembly makes rotor swaps quick and straightforward, saving time in pit lane or the garage without sacrificing structural integrity or braking precision.