ISR Performance Mazda Miata NA Circuit Spec Exhaust-(1994-1997)

ISR Performance Mazda Miata NA Circuit Spec Exhaust (1994-1997)

Give your 1994–1997 Mazda Miata a serious performance and style boost with the ISR Performance Circuit Spec Exhaust. This sleek, two-piece exhaust system is designed exclusively for the 1.8L naturally aspirated Miata, featuring a robust 2.5-inch front pipe made from brushed stainless steel with precision flanges. It smoothly transitions into a standard midsection and tail section, culminating in a polished stainless steel muffler accented with a striking 4-inch tip.

Tested on both OBD1 and OBD2 Miatas, this exhaust package even comes with a secondary O₂ bung to help your engine breathe better. Unlike factory exhausts that keep noise and vibration low (often at the expense of performance), this upgraded system channels exhaust gases more efficiently—boosting overall airflow and power output. The result is a more aggressive tone, sharper acceleration, and improved performance whether you’re on the track or enjoying a spirited drive.

Please note that this exhaust is designed for 1.8L NA Miatas (1994–1997) and will not work on Euro models.

Order Yours Today

At Enjuku Racing, our experts have handpicked every part for its quality and reliability. If you have questions about your configuration, our knowledgeable team is here to help. Upgrade your Miata with this high-performance exhaust and experience the difference today!

Legal Note:

All ISR Performance products are designed for off-road use only and are legal solely for competition vehicles that are not registered, licensed, or used on public roads, or for other exempted vehicles.

Updated February 24, 2025.