FX400 170% Increase in Holding Capacity - RACE/STREET The FX400 System uses the Power Plus I, Hi-Levarage, Heavy-Duty Pressure Plate with a custom and extremely durable, Sprung Ceramic disc. This is the ultimate extreme duty street and/or road/drag racing system. It is available in a 6 or 8 ceramic puck configuration. The 6-puck being the more aggressive setup and 8-puck being the less aggressive. The sprung hub design allows for moderate dampening in high-torque applications, rendering it much more street friendly than solid or rigid designs. This disc is designed for long life, outstanding holding capacity, and rapid heat dissipation.