Fits Applications Using Wilwood Pro MII Spindes, 5x4.5" BC

**IMPORTANT: This system is designed for vehicles with a 15/16” master cylinder and proper pedal ratio. For manual brake setups, a 7/8” master cylinder can be used so less effort is required to apply the brakes. Any master larger than 15/16” will require too much pedal input to generate proper line pressure for your brake system.**