ISR Performance Circuit Spec Cat Back Exhaust Mazda Miata NB 1999-2005 | IS-CSEXH-NB Vehicle Model_STi reduce the oil burned in

reduce the oil burned in the engine and reduce the detonation due to a dirty intake charge pipe

CP forged pistons feature superb ring seal

OEM endlinks are weak and will flex greatly after installing a stiffer aftermarket swaybar

Part #: SU003F

traditional flow-through or dead-end systems

ISR Performance Circuit Spec Cat Back Exhaust Mazda Miata NB 1999-2005 | IS-CSEXH-NB Vehicle Model_STi reduce the oil burned inPart #: IS CSEXH NB 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. Features a 2 piece design. IMPORTANT NOTE: This