They directly bolt on to where the original exhaust sits and do not require any further modification. Cat back exhaust systems come with exhaust pipes, muffler and exhaust tips, so you have everything you need to replace the exhaust. The cat back is the section of the exhaust that runs from the outlet of the catalytic converter to the exhaust tips. Exhaust systems that include this often feature a large pipe running from the converter to the muffler, with mandrel-bent turns and glasspacks for reduced back pressure. Your go-to spot for information on the exhaust system, as well as mufflers, catalytic converters, pipes and sensors.

Considering cat-back exhausts replace more restrictions, they typically offer increased performance and noise compared to axle-back systems