727 / TF904 / 42RE / 44RE / 42RH / 44RH Aluminum Pressure Plate Kit. One Billet aluminum beveled pressure plate (Part # 123901PP) is 65% lighter than the O.E.M. version, 0.30 lbs. versus 0.85 lbs. Two Billet aluminum pressure plates (Part # 123900PA) weighs 0.45 lbs. versus 10.5 lbs. O.E.M. This strong and light weight kit includes 3 plates. Available in select thicknesses.