ACT pressure plates feature a special, single diaphragm design
to dramatically increase clamp load without the adverse effects of
double-diaphragm type clutches. Effective diaphragm designs are
used to increase clamp load, reduce deflection and maximize clutch
life. All diaphragms endure an exclusive four stage, heat treating
process for unparalleled performance. The Sport pressure plate
provides a clamp load increase of 10-30% higher than stock and has
a stock to moderate pedal feel.