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

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

Take your Mazda Miata NB (1999–2005) to a whole new level with the ISR Performance Circuit Spec Exhaust. This two-piece system features a rugged 2.5-inch front pipe crafted from brushed stainless steel that mounts directly to your header, seamlessly transitioning into a mid pipe with an integrated muffler. The rear section showcases a polished stainless steel muffler accented with a striking 4-inch tip—delivering an aggressive sound and a sporty look that’s sure to turn heads.

Designed to support maximum driving momentum, this exhaust not only promotes efficient combustion by rapidly expelling exhaust gases from the manifold but also trims about 18 pounds off your stock system. The result? Sharper acceleration, improved responsiveness, and a more dynamic driving experience. Please note, this setup hasn’t been tested on turbo Mazdaspeed models and is not compatible with Euro Miatas.

Engineered for competition and off-road use only, the ISR Performance Circuit Spec Exhaust is the perfect upgrade if you’re looking to boost performance while keeping your ride looking and sounding fierce.

Order Your New Exhaust

Ready to give your ride a real upgrade? An exhaust system isn’t just about boosting performance—it’s a major style statement, too. This ISR Miata performance exhaust delivers the perfect blend of power and good looks, keeping your Miata running strong while turning heads wherever you go. Contact us today to order yours or learn more about how this high-performance exhaust can transform your Miata.

Legal Note:

All ISR Performance products are designed for off-road use only and are legal only for use in competition vehicles which may never be registered, licensed, and/or used on public streets or highways, or in other exempted vehicles.

Updated February 24, 2025.