Circuit Spec Cat-Back Exhaust System

The ISR Performance Circuit Spec Exhaust is a two-piece system engineered for the Mazda Miata NB models from 1999 to 2005. This exhaust features a 2.5-inch brushed stainless steel construction for the front and mid-section piping, designed to connect directly to the header. The rear section includes a polished stainless steel muffler, topped with a 4-inch tip, providing a distinct aesthetic and sound. The system comes complete with two 2.5-inch exhaust gaskets, four bolts, and four nuts to facilitate installation. It is crucial to note that this exhaust system has not been tested on the turbo Mazdaspeed model. Furthermore, it is legally intended for use only in competition vehicles that will never be registered, licensed, or used on public streets or highways, or for other specifically exempted vehicles.