ST2 Upgrade Disc - High torque sprung 6 puck ceramic performance disc assembly. The ST2 disc is lined with Carlisle sintered friction buttons and are assembled with precision engineered components designed for increased horse power applications. Each disc uses a thicker retainer stamping and increased hardness hub to ensure maximum strength and reliability. For additional strength and reliability the ST2 disc uses a partial closed spring window that provides additional spring support and protection. M-Pact's sprung assembly construction helps to dampen torsion vibrations for smooth engagement and operation. The ceramic buttons on the ST2 clutch disc provide a slightly aggressive engagement with a stock pedal effort will make this upgrade kit suitable for most street performance enthusiasts.