Action Clutch Stage 4 Clutch Kit (1MD) for Mazda MX-5 Miata 1990-1993 1.6L DOHC (B6) (ACR-0866)Action Clutch Stage 4 Clutch Kit 19901993 Mazda MX 5 Miata 1. 6L DOHC (B6) Part #: ACR 0866 Overview The Action Clutch Stage 4 Metallic Rigid Clutch Kit is designed to deliver exceptional performance for Mazda MX 5 Miata owners seeking increased holding capacity and aggressive engagement. Built specifically for the 19901993 models equipped with the 1. 6L DOHC B6 engine, this clutch kit is ideal for enthusiasts who push their vehicles hard on the