The SPEC twin-disc flywheel for 1985–1998 Nissan Skyline RB20/RB25 engines replaces the stock single-disc assembly with a twin-disc configuration. Offered for RB20 and RB25 Skyline applications, this flywheel is intended as a direct-fit drivetrain component to work with compatible multi-disc clutch systems and handle the clutch interface requirements of those engines.
Spec 85-98 Nissan Skyline RB20/RB25 Twin Disc Flywheel