FM6-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use an exclusive diaphragm design to increase clamp load, decease deflection, and maximize clutch life. All diaphragms go through a four-stage, heat-treating process for unmatched performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's Performance Street discs feature premium organic materials with high copper content for improved heat transfer and steel-backed lining for greater burst strength and durability. These discs have decreased marcel for faster shift action to complement ACT pressure plates, with enhanced strength and reliability. The feel of the clutch is a low to moderate pedal feel, smooth engagement with stock to low gear rattle. ACT's exclusive diaphragm design achieves a longer clutch life. The FM6-HDSS is recommended for street and race use. All ACT pressure plates are dynamically computer balanced for smooth operation at high RPM.