Upgraded 240mm change over kit. Upgraded Aluminum flywheel included. Will not work with OEM or different brand flywheel. Included: HD pressure plate, sprung clutch disc, tool, and aluminum flywheel. 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. The FX400/HDCL (8-puck) ceramic full face disc design creates a quick and rapid engagement and maintains minimal chatter due to the marcel cushion between the disc linings. This disc is designed for street driven vehicles. The FX400/HDC6 (6-Puck) ceramic paddle design creates a quick and rapid engagement as well as clutch chatter that may not be ideal for street driven vehicles. Warning Due to the solid (no Marcel) friction rivet design, the FX400 6 disc engages very quickly and may chatter slightly in first and reverse. To help alleviate this problem, we only use premium ceramic friction material. Heavy-Duty 4 or 6 puck or Segmented 8 Puck Ceramic Button Disc Premium Ceramic Friction Material Heavy-Duty Sprung Hub (when applicable) No Marcel OEM or better Release Bearing Pilot Bearing (when applicable) Alignment Tool Instruction Card Decals