Billet Lightweight Flywheel Nissan SR20DET S13/S14. The new SPEC flywheels offer a low moment of inertia, allowing for quicker revs and a lower stressed rotating assembly. The unit offers greater energy than lightweight aluminum flywheels, providing more desired momentum for street, drift, drag and large turbo applications.
I decided to go with putting this and a Spec Stage 1 in instead of resurfacing my stock flywheel and this was no disappointment. Noticeable weight difference , but wasn't crazy light so DD is smooth and easy. 1200 miles later and 0 problems.