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ISR Performance Mazda Miata NB Circuit Spec Exhaust-(1999-2005)

4 Customer Reviews Write a Review

ISR Performance Mazda Miata NB Circuit Spec Exhaust 1999-2005

Features a 2 piece design.

 This section of pipe is 2.5'' brushed stainless steel construction. The rear section will feature a polished stainless steel muffler with 4'' tip.

  • 1x Stainless steel muffler with 4'' tip
  • 2x 2.5" Exhuast gaskets 
  • 4x bolts
  • 4x Nuts


this exhaust has not been tested on the turbo mazdaspeed model

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Legal only for use in competition vehicles which may never be registered, licensed, and/or used on public streets or highways; and also for use in other exempted vehicles.

Write a Review
  • Amazing quality!

    Posted by William Gingerich on 9th Nov 2022

    I am very impressed! Not only with the exhaust note but also with the insane quality of materials and welds for this price point. Well worth my money. I would recommend poly hangers because it is very close to the axle.

  • Great exhaust

    Posted by Brody on 4th Oct 2022

    Fitment is very good. Welds look amazing. This exhaust is definitely on the louder side. Perfect for a street or race build. Maybe or maybe doesn’t shoot flames :)

  • good sounding exhuast slight drone

    Posted by Unknown on 30th May 2017

    Install was easy recommend getting stiffer hanger bushings comes with everything you need to run catless. Slight drone at highway speeds it has a nice deep rumble

  • Awesome

    Posted by Ben on 23rd May 2017

    I absolutely love the exhaust its just what I wanted and it was not hard at all to put on plus I got the exhaust in 1 day if you live in florida they delivered a 5 to 7 day shipping in 1 day which suprised me I would highly recommend the company and the exhaust