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

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ISR Performance
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 Product Description

ISR Performance Mazda Miata NB Circuit Spec Exhaust 1999-2005

Features a 2 piece design.

A front and mid pipe that mounts directly to the header and features an integrated muffler. This section of pipe is 2.5'' brushed stainless steel construction. The rear section will feature a polished stainless steel muffler with 4'' tip. The NB Miata exhausts also come with a secondary o2 bung and o2 bung extension for individuals using factory ECU who do not want to have a CEL.

Whats in the box:

  • 1x  Resonated front pipe
  • 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

** All ISR Performance Products are Designed for Off Road Use Only **


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 Product Reviews

  1. 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

  2. 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

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