Wilwood 170-15999 Big Brake Dynamic Lug Drive Rotor Hat

The Wilwood 170-15999 is a Big Brake Dynamic Lug Drive rotor hat that features an innovative mounting system designed to eliminate traditional rotor bolts. This advanced design allows the rotor to move independently of the hat as it expands and contracts through heat cycles, removing all thermally generated stress from the rotor attachment points.

Key Performance Benefits:

• Rotors stay flatter and run truer throughout heat cycles
• Brake response and pedal feel remain consistent
• Eliminates pad knock back and rotor drag
• Prevents hat distortion from thermal expansion and shrinkage
• Eliminates bolt hole alignment issues during rotor replacement

Advanced Design Features:

• Spring-loaded, replaceable stainless steel inserts in each lug-drive slot protect the aluminum hat from wear
• Large single snap-ring retention system makes assembly and installation quick and simple
• No need to torque or safety wire rotor mounting bolts
• Lightweight construction with additional drilling to remove unnecessary rotating weight
• Precision machined from high-strength aluminum alloy

This dynamic lug drive hat represents a significant advancement in brake rotor mounting technology, addressing common issues associated with thermal distortion in high-performance braking applications. The floating mount design ensures optimal rotor performance and extends component life in demanding racing and street performance applications.