Fidanza Aluminum Lightweight ALuminum Flywheel 2004 2008 Acura TSX (191241). Fidanza Aluminum Lightweight ALuminum Flywheel 2004 2008 Acura TSX Fidanza aluminum flywheels are made from the highest quality 6061 T6 aluminum. The material is fantastic for strength, heat dissipation and of course reduction in weight. The friction surface is constructed out of an icredibly strong 1045 steel. A Fidanza aluminum flywheel can mate with any type of clutch material, including organic, kevlar, ceramic, metallic and sintered iron. The replaceable friction surface is attached with military grade aerospace fasteners. With these replaceable friction plates there is no need to replace the entire flywheel when the clutch or flywheel is at the end of it's life, saving time and money. The ring gears are also made from 1050 steel and are heat treated for durability. The flywheel ring gears are heated then pressed on and secured with grade 8 button screws. Fidanza was the first to utilize a stepped dowel system in most of their flywheel applications. This doweling method ensures that once the pressure plate is installed the dowels cannot be removed because they become locked into place.