Fidanza Aluminum Flywheel - Supra JZA80 NA, 2JZ-GE, 5 SpeedFidanza Aluminum Flywheel for Supra JZA80 NA with 2JZ GE Engine & 5 Speed Transmission An aluminum flywheel is the easiest and most ecomomical way to increase a car's performance. Average aluminum flywheel weight is 55% less than the factory steel flywheel. This weight difference allows a vehicle's engine to use much more of its available horse power. Fidanza Flywheels are made of the highest quality components 6061 T6 aluminum 1050 high carbon alloy