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. 6-puck ceramic sprung disc Upgrade kit. Flywheel sold separately Must use CM Flywheel: FW-600-SF