ISR Performance Race Muffler Delete - NA/NB Miata (90-05)

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.