ISR Performance NB Circuit Spec Exhaust

DESCRIPTION

The ISR Circuit Spec Exhaust features 2.5 inch brushed stainless steel piping and flanges, and a polished stainless steel muffler with large 4 inch tip. Fits 1999-2005 1.8L Miata. This is a midpipe plus muffler; replaces everything from the header back. The 2004-2005 Mazdaspeed would require our RoadsterSport MSM connecting pipe to use this exhaust.

This is a CATLESS exhaust. Eliminates the catalytic converter in the midpipe. As such it is a RACE ONLY option. Legal only for use in competition vehicles which may never be registered, licensed, and/or used on public streets or highways.

This is the most aggressive exhaust option we offer. Simple straight-through muffler with minimal sound reduction and no drone control. For those looking for and happy with a loud car.
For more 'civilized' street exhaust options, look to our RoadsterSport and Racing Beat offerings.

Includes:
1x Midpipe with resonator
1x Stainless steel muffler with 4" tip
2x 2.5" Exhaust gaskets
4x bolts
4x Nuts

Brian's Thoughts. If you want it really loud and raw and untamed, this is the way!
Far too raspy, and with too much drone, in my experience for any street Miata for anyone much over about 21 years of age.