Fidanza Aluimum Flywheel 1992-1995 Porsche 968 3.0LFidanza flywheels are manufactured from the highest quality 6061 T6 billet aluminum. They feature excellent heat dissipation and weight reduction. The replaceable friction surface is constructed from 1045 steel and attached with military grade aerospace fasteners. Fidanza billet aluminum flywheels also feature a 1050 heat treated steel ring gear that's pressed on and secured with Grade 8 button screws. They also use a stepped dowel system, so that