ISR Performance Circuit Spec Exhaust (94-97 Miata NA 1.8)
Mid section and tail section are standard and there are no variations available.
The exhaust features 2.5'' brushed stainless steel piping and flanges, and a polished stainless steel muffler with 4'' tip.
The current NA Miata exhausts have been tested on the OBD1 & 2 1.8L NA Miatas and do feature a secondary o2 bung.
