The ACT XTG4 Clutch Kit featres an Xtreme Pressure Plate and a Sprung 4 Puck Disc. This kit allows for a more aggressive pedal feel with a disc that will launch you with confidence. ACT designs and manufactures their parts using unique engineering ideas that include proprietary trade secrets. This is especially true when it comes to diaphragm spring technology and what separates ACT from other brands. As a result, ACT clutches are unequaled for their consistent feel, high torque capacity, good durability and long wear life.