The Fidanza aluminum flywheel for 2005-and-newer Scion tC is a lightweight, high-performance replacement that reduces rotational mass to improve throttle response and acceleration. Constructed with a billet-style aluminum body and a replaceable, heat-treated friction plate, it uses a hardened 1050 steel ring gear and military-spec fasteners for strength. Expect roughly 40–60% weight reduction versus stock to free up engine responsiveness.
Fidanza 05+ Scion tC Aluminum Flywheel