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The ISR Circuit Spec Exhaust for the 2006–2013 Miata NC is a vehicle-specific catback option tuned for the NC chassis. It refines exhaust tone and supports throttle response while offering a direct-fit replacement for stock components. Intended for owners of 2006–2013 Mazda MX-5 Miata NC models, it provides a simply specified upgrade that matches the car's exhaust routing and mounting points.
ISR Performance Circuit Spec Exhaust - 06-13 Miata NC
