When replacing a clutch, upgrading the flywheel can improve throttle response, drivability, and overall drivetrain performance. IAG Performance offers flywheels for Subaru WRX, STI, BRZ, Legacy GT, and Forester XT applications, with steel and aluminum options available to match your driving style and performance goals. Compatible with EJ25, FA20, and FA24 platforms, these flywheels are sourced from trusted manufacturers including ACT, Clutch Masters, Exedy, Fidanza, SPEC, Competition Clutch, and South Bend Clutch.