ZM1-LW01 1990-1993 Mazda Miata ACT Lightweight Racing Clutch is a special clutch designed by ACT to meet the lightweight clutch demands of the Spec Miata race class. Since the kit has been produced, the rules for Spec Miata have changed, leaving this clutch kit without a home. This ultra light clutch kit will work very well for time attack Miatas, track day Miatas, autocross Miatas, and full on race Miatas in different classes other than Spec Miata.