The FX400 System uses the Power Plus I Pressure Plate with a custom, extremely durable, Sprung Ceramic disc. This is the ultimate extreme duty street and/or road/drag racing system. The sprung hub design allows for moderate dampening in high-torque applications, rendering it much more streetable than solid or rigid designs. This disc is designed for long life, outstanding holding capacity, and rapid heat dissipation. Heavy duty pressure plate. Lined ceramic sprung disc. Flywheel sold separately Must use CM Flywheel: FW-600-SF