89-97 Mazda Miata 1.6L M2 Performance Stainless Steel Headers Exhaust MX-5 Replace stock restrictive headers and increase horsepower and torque. Made of High Quality T304 Stainless Steel Material. TIG Welded CNC Machine Flange. 1.5" (38mm) Primary Tubing with 2" 51mm piping. Gaskets, bolts and nuts are included. Since an improperly tuned engine can cause the 'Check Engine Light' to illuminate, there is no guarantee against 'Check Engine Lights' when using this product. Off Road Use only. Vehicle Application: 1989 1990 1991 1992 1993 1994 1995 1996 1997 Mazda Miata MX-5 1.6L