M2 Motorsport 2.5″ Decat 440mm Mazda MX-5 NA

The M2 Motorsport 2.5″ de-cat replaces the catalytic converter. Measuring 440mm in length, it fits Mazda MX-5s from 1994 to 1997. The 2.5″ bore gives a substantial increase in volume over standard exhausts, suiting both naturally aspirated and forced induction cars.

Please measure the length of your catalytic converter before purchasing. Bolts directly to the downpipe, however, may not fit the standard cat-back exhaust.

The Mazda MX-5 NA came with three different catalytic converters:

89-93 370mm

94-97 440mm

Late 97 475mm