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The Pressure Plate is the most critical part to the whole clutch assembly. The pressure plate applies a clamping force (pressure) which holds the driven friction disc between it and the flywheel. The pressure plate is fixed to the flywheel with bolts and they rotate together. The pressure plate contains a diaphragm or springs that apply the pressure on the main casting or driving surface. In order to release or disengage drive, the diaphragm or clutch levers are actuated which allows the main casting to lift off the driven disc.

The Release Bearing provides a medium of actuation between the rotating clutch assembly and the static clutch fork and transmission. The bearing will absorb the force to release the clutch and also reduce wear between rotating and non-rotating components.
