Light weight flywheel made by JunAuto for the NA, NB & NC MX-5 Miata (1989 to 2015). These are almost 50% lighter than OEM and will make the engine rev much faster (better engine response) than OEM due to reduced rotational mass. It's a great add-on that anyone who enjoys spirited driving will love. It is made by turning and shaving forged material to have a very strong part. Please scroll down for OEM versus Jun Auto flywheel weight. Learn More